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Finding the Fourth Proportional to 67,710.80, 101,575.64 and 28,258.88

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Solution

The fourth proportional to 67,710.80, 101,575.64 and 28,258.88 is: 42,392.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,710.80 : 101,575.64 = 28,258.88 : x
  2. Step 2: Convert to fraction form
    67,710.80/101,575.64 = 28,258.88/x
  3. Step 3: Cross multiply
    67,710.80x = 101,575.64 × 28,258.88
  4. Step 4: Simplify right side
    67,710.80x = 2,870,413,821.68
  5. Step 5: Solve for x
    x = 2,870,413,821.68/67,710.80
  6. Step 6: Final answer
    x = 42,392.26

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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.