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Finding the Fourth Proportional to 71,625.47, 107,432.88 and 28,933.86

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Solution

The fourth proportional to 71,625.47, 107,432.88 and 28,933.86 is: 43,398.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,625.47 : 107,432.88 = 28,933.86 : x
  2. Step 2: Convert to fraction form
    71,625.47/107,432.88 = 28,933.86/x
  3. Step 3: Cross multiply
    71,625.47x = 107,432.88 × 28,933.86
  4. Step 4: Simplify right side
    71,625.47x = 3,108,447,762.13
  5. Step 5: Solve for x
    x = 3,108,447,762.13/71,625.47
  6. Step 6: Final answer
    x = 43,398.64

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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.