Home / 86,229.60-129,344.40-30,814.56

Finding the Fourth Proportional to 86,229.60, 129,344.40 and 30,814.56

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Solution

The fourth proportional to 86,229.60, 129,344.40 and 30,814.56 is: 46,221.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,229.60 : 129,344.40 = 30,814.56 : x
  2. Step 2: Convert to fraction form
    86,229.60/129,344.40 = 30,814.56/x
  3. Step 3: Cross multiply
    86,229.60x = 129,344.40 × 30,814.56
  4. Step 4: Simplify right side
    86,229.60x = 3,985,690,774.46
  5. Step 5: Solve for x
    x = 3,985,690,774.46/86,229.60
  6. Step 6: Final answer
    x = 46,221.84

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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.