Home / 78,043.31-117,061.45-25,453.25

Finding the Fourth Proportional to 78,043.31, 117,061.45 and 25,453.25

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Solution

The fourth proportional to 78,043.31, 117,061.45 and 25,453.25 is: 38,178.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,043.31 : 117,061.45 = 25,453.25 : x
  2. Step 2: Convert to fraction form
    78,043.31/117,061.45 = 25,453.25/x
  3. Step 3: Cross multiply
    78,043.31x = 117,061.45 × 25,453.25
  4. Step 4: Simplify right side
    78,043.31x = 2,979,593,639.64
  5. Step 5: Solve for x
    x = 2,979,593,639.64/78,043.31
  6. Step 6: Final answer
    x = 38,178.72

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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.