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Finding the Fourth Proportional to 71,687.84, 98,934.41 and 43,008.74

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Solution

The fourth proportional to 71,687.84, 98,934.41 and 43,008.74 is: 59,355.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,687.84 : 98,934.41 = 43,008.74 : x
  2. Step 2: Convert to fraction form
    71,687.84/98,934.41 = 43,008.74/x
  3. Step 3: Cross multiply
    71,687.84x = 98,934.41 × 43,008.74
  4. Step 4: Simplify right side
    71,687.84x = 4,255,044,300.60
  5. Step 5: Solve for x
    x = 4,255,044,300.60/71,687.84
  6. Step 6: Final answer
    x = 59,355.18

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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.