Home / 63,139.18-87,508.30-61,958.20

Finding the Fourth Proportional to 63,139.18, 87,508.30 and 61,958.20

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Solution

The fourth proportional to 63,139.18, 87,508.30 and 61,958.20 is: 85,871.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,139.18 : 87,508.30 = 61,958.20 : x
  2. Step 2: Convert to fraction form
    63,139.18/87,508.30 = 61,958.20/x
  3. Step 3: Cross multiply
    63,139.18x = 87,508.30 × 61,958.20
  4. Step 4: Simplify right side
    63,139.18x = 5,421,856,753.06
  5. Step 5: Solve for x
    x = 5,421,856,753.06/63,139.18
  6. Step 6: Final answer
    x = 85,871.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.