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Finding the Fourth Proportional to 40,502.40, 60,724.80 and 15,532.80

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Solution

The fourth proportional to 40,502.40, 60,724.80 and 15,532.80 is: 23,288.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,502.40 : 60,724.80 = 15,532.80 : x
  2. Step 2: Convert to fraction form
    40,502.40/60,724.80 = 15,532.80/x
  3. Step 3: Cross multiply
    40,502.40x = 60,724.80 × 15,532.80
  4. Step 4: Simplify right side
    40,502.40x = 943,226,173.44
  5. Step 5: Solve for x
    x = 943,226,173.44/40,502.40
  6. Step 6: Final answer
    x = 23,288.16

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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.