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Finding the Fourth Proportional to 71,470.03, 99,080.38 and 67,678.17

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Solution

The fourth proportional to 71,470.03, 99,080.38 and 67,678.17 is: 93,823.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,470.03 : 99,080.38 = 67,678.17 : x
  2. Step 2: Convert to fraction form
    71,470.03/99,080.38 = 67,678.17/x
  3. Step 3: Cross multiply
    71,470.03x = 99,080.38 × 67,678.17
  4. Step 4: Simplify right side
    71,470.03x = 6,705,578,801.30
  5. Step 5: Solve for x
    x = 6,705,578,801.30/71,470.03
  6. Step 6: Final answer
    x = 93,823.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.