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Finding the Fourth Proportional to 60,234.55, 82,989.87 and 39,780.29

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Solution

The fourth proportional to 60,234.55, 82,989.87 and 39,780.29 is: 54,808.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,234.55 : 82,989.87 = 39,780.29 : x
  2. Step 2: Convert to fraction form
    60,234.55/82,989.87 = 39,780.29/x
  3. Step 3: Cross multiply
    60,234.55x = 82,989.87 × 39,780.29
  4. Step 4: Simplify right side
    60,234.55x = 3,301,361,153.96
  5. Step 5: Solve for x
    x = 3,301,361,153.96/60,234.55
  6. Step 6: Final answer
    x = 54,808.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.