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Finding the Fourth Proportional to 101,766.80, 140,446.85 and 56,459.39

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Solution

The fourth proportional to 101,766.80, 140,446.85 and 56,459.39 is: 77,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,766.80 : 140,446.85 = 56,459.39 : x
  2. Step 2: Convert to fraction form
    101,766.80/140,446.85 = 56,459.39/x
  3. Step 3: Cross multiply
    101,766.80x = 140,446.85 × 56,459.39
  4. Step 4: Simplify right side
    101,766.80x = 7,929,542,493.89
  5. Step 5: Solve for x
    x = 7,929,542,493.89/101,766.80
  6. Step 6: Final answer
    x = 77,918.75

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1.5x scale

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.