Home / 86,424.10-129,633.68-47,229.42

Finding the Fourth Proportional to 86,424.10, 129,633.68 and 47,229.42

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Solution

The fourth proportional to 86,424.10, 129,633.68 and 47,229.42 is: 70,842.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,424.10 : 129,633.68 = 47,229.42 : x
  2. Step 2: Convert to fraction form
    86,424.10/129,633.68 = 47,229.42/x
  3. Step 3: Cross multiply
    86,424.10x = 129,633.68 × 47,229.42
  4. Step 4: Simplify right side
    86,424.10x = 6,122,523,518.87
  5. Step 5: Solve for x
    x = 6,122,523,518.87/86,424.10
  6. Step 6: Final answer
    x = 70,842.78

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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.