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Finding the Fourth Proportional to 60,479.70, 90,610.20 and 51,731.70

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Solution

The fourth proportional to 60,479.70, 90,610.20 and 51,731.70 is: 77,504.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,479.70 : 90,610.20 = 51,731.70 : x
  2. Step 2: Convert to fraction form
    60,479.70/90,610.20 = 51,731.70/x
  3. Step 3: Cross multiply
    60,479.70x = 90,610.20 × 51,731.70
  4. Step 4: Simplify right side
    60,479.70x = 4,687,419,683.34
  5. Step 5: Solve for x
    x = 4,687,419,683.34/60,479.70
  6. Step 6: Final answer
    x = 77,504.02

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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.