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Finding the Fourth Proportional to 40,860, 56,387.54 and 22,712.42

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Solution

The fourth proportional to 40,860, 56,387.54 and 22,712.42 is: 31,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,860 : 56,387.54 = 22,712.42 : x
  2. Step 2: Convert to fraction form
    40,860/56,387.54 = 22,712.42/x
  3. Step 3: Cross multiply
    40,860x = 56,387.54 × 22,712.42
  4. Step 4: Simplify right side
    40,860x = 1,280,697,491.25
  5. Step 5: Solve for x
    x = 1,280,697,491.25/40,860
  6. Step 6: Final answer
    x = 31,343.55

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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.