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Finding the Fourth Proportional to 101,874.47, 140,587.61 and 56,555.73

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Solution

The fourth proportional to 101,874.47, 140,587.61 and 56,555.73 is: 78,047.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,874.47 : 140,587.61 = 56,555.73 : x
  2. Step 2: Convert to fraction form
    101,874.47/140,587.61 = 56,555.73/x
  3. Step 3: Cross multiply
    101,874.47x = 140,587.61 × 56,555.73
  4. Step 4: Simplify right side
    101,874.47x = 7,951,034,629.73
  5. Step 5: Solve for x
    x = 7,951,034,629.73/101,874.47
  6. Step 6: Final answer
    x = 78,047.38

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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.