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Finding the Fourth Proportional to 40,620.32, 60,762 and 38,132

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Solution

The fourth proportional to 40,620.32, 60,762 and 38,132 is: 57,039.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,620.32 : 60,762 = 38,132 : x
  2. Step 2: Convert to fraction form
    40,620.32/60,762 = 38,132/x
  3. Step 3: Cross multiply
    40,620.32x = 60,762 × 38,132
  4. Step 4: Simplify right side
    40,620.32x = 2,316,976,584
  5. Step 5: Solve for x
    x = 2,316,976,584/40,620.32
  6. Step 6: Final answer
    x = 57,039.84

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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.