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Finding the Fourth Proportional to 60,399.54, 90,600.21 and 20,957.90

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Solution

The fourth proportional to 60,399.54, 90,600.21 and 20,957.90 is: 31,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,399.54 : 90,600.21 = 20,957.90 : x
  2. Step 2: Convert to fraction form
    60,399.54/90,600.21 = 20,957.90/x
  3. Step 3: Cross multiply
    60,399.54x = 90,600.21 × 20,957.90
  4. Step 4: Simplify right side
    60,399.54x = 1,898,789,688.16
  5. Step 5: Solve for x
    x = 1,898,789,688.16/60,399.54
  6. Step 6: Final answer
    x = 31,437.15

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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.