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Finding the Fourth Proportional to 71,376, 98,498.88 and 43,081.68

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Solution

The fourth proportional to 71,376, 98,498.88 and 43,081.68 is: 59,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,376 : 98,498.88 = 43,081.68 : x
  2. Step 2: Convert to fraction form
    71,376/98,498.88 = 43,081.68/x
  3. Step 3: Cross multiply
    71,376x = 98,498.88 × 43,081.68
  4. Step 4: Simplify right side
    71,376x = 4,243,497,228.52
  5. Step 5: Solve for x
    x = 4,243,497,228.52/71,376
  6. Step 6: Final answer
    x = 59,452.72

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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.