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Finding the Fourth Proportional to 66,712.90, 100,060.71 and 25,154.50

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Solution

The fourth proportional to 66,712.90, 100,060.71 and 25,154.50 is: 37,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,712.90 : 100,060.71 = 25,154.50 : x
  2. Step 2: Convert to fraction form
    66,712.90/100,060.71 = 25,154.50/x
  3. Step 3: Cross multiply
    66,712.90x = 100,060.71 × 25,154.50
  4. Step 4: Simplify right side
    66,712.90x = 2,516,977,129.70
  5. Step 5: Solve for x
    x = 2,516,977,129.70/66,712.90
  6. Step 6: Final answer
    x = 37,728.49

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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.