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Finding the Fourth Proportional to 57,998.20, 87,062.10 and 54,191.20

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Solution

The fourth proportional to 57,998.20, 87,062.10 and 54,191.20 is: 81,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,998.20 : 87,062.10 = 54,191.20 : x
  2. Step 2: Convert to fraction form
    57,998.20/87,062.10 = 54,191.20/x
  3. Step 3: Cross multiply
    57,998.20x = 87,062.10 × 54,191.20
  4. Step 4: Simplify right side
    57,998.20x = 4,717,999,673.52
  5. Step 5: Solve for x
    x = 4,717,999,673.52/57,998.20
  6. Step 6: Final answer
    x = 81,347.35

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1.5x scale

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.