Home / 78,475.71-117,732.02-25,885.20

Finding the Fourth Proportional to 78,475.71, 117,732.02 and 25,885.20

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Solution

The fourth proportional to 78,475.71, 117,732.02 and 25,885.20 is: 38,833.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,475.71 : 117,732.02 = 25,885.20 : x
  2. Step 2: Convert to fraction form
    78,475.71/117,732.02 = 25,885.20/x
  3. Step 3: Cross multiply
    78,475.71x = 117,732.02 × 25,885.20
  4. Step 4: Simplify right side
    78,475.71x = 3,047,516,312.01
  5. Step 5: Solve for x
    x = 3,047,516,312.01/78,475.71
  6. Step 6: Final answer
    x = 38,833.88

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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.