Home / 78,638,541,198.50-117,960,009,534.66-25,579,574,533.20

Finding the Fourth Proportional to 78,638,541,198.50, 117,960,009,534.66 and 25,579,574,533.20

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Solution

The fourth proportional to 78,638,541,198.50, 117,960,009,534.66 and 25,579,574,533.20 is: 38,370,076,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,638,541,198.50 : 117,960,009,534.66 = 25,579,574,533.20 : x
  2. Step 2: Convert to fraction form
    78,638,541,198.50/117,960,009,534.66 = 25,579,574,533.20/x
  3. Step 3: Cross multiply
    78,638,541,198.50x = 117,960,009,534.66 × 25,579,574,533.20
  4. Step 4: Simplify right side
    78,638,541,198.50x = 3,017,366,855,828,818,100,224
  5. Step 5: Solve for x
    x = 3,017,366,855,828,818,100,224/78,638,541,198.50
  6. Step 6: Final answer
    x = 38,370,076,680.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.