Home / 78,628.12-117,886.58-25,303.60

Finding the Fourth Proportional to 78,628.12, 117,886.58 and 25,303.60

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Solution

The fourth proportional to 78,628.12, 117,886.58 and 25,303.60 is: 37,937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,628.12 : 117,886.58 = 25,303.60 : x
  2. Step 2: Convert to fraction form
    78,628.12/117,886.58 = 25,303.60/x
  3. Step 3: Cross multiply
    78,628.12x = 117,886.58 × 25,303.60
  4. Step 4: Simplify right side
    78,628.12x = 2,982,954,149.74
  5. Step 5: Solve for x
    x = 2,982,954,149.74/78,628.12
  6. Step 6: Final answer
    x = 37,937.50

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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.