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Finding the Fourth Proportional to 40,502.70, 60,754.05 and 39,409.20

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Solution

The fourth proportional to 40,502.70, 60,754.05 and 39,409.20 is: 59,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,502.70 : 60,754.05 = 39,409.20 : x
  2. Step 2: Convert to fraction form
    40,502.70/60,754.05 = 39,409.20/x
  3. Step 3: Cross multiply
    40,502.70x = 60,754.05 × 39,409.20
  4. Step 4: Simplify right side
    40,502.70x = 2,394,268,507.26
  5. Step 5: Solve for x
    x = 2,394,268,507.26/40,502.70
  6. Step 6: Final answer
    x = 59,113.80

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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.