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Finding the Fourth Proportional to 75,310.40, 112,891.20 and 42,046.40

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Solution

The fourth proportional to 75,310.40, 112,891.20 and 42,046.40 is: 63,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,310.40 : 112,891.20 = 42,046.40 : x
  2. Step 2: Convert to fraction form
    75,310.40/112,891.20 = 42,046.40/x
  3. Step 3: Cross multiply
    75,310.40x = 112,891.20 × 42,046.40
  4. Step 4: Simplify right side
    75,310.40x = 4,746,668,551.68
  5. Step 5: Solve for x
    x = 4,746,668,551.68/75,310.40
  6. Step 6: Final answer
    x = 63,028.06

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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.