Home / 71,459.20-98,613.96-39,631.04

Finding the Fourth Proportional to 71,459.20, 98,613.96 and 39,631.04

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Solution

The fourth proportional to 71,459.20, 98,613.96 and 39,631.04 is: 54,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,459.20 : 98,613.96 = 39,631.04 : x
  2. Step 2: Convert to fraction form
    71,459.20/98,613.96 = 39,631.04/x
  3. Step 3: Cross multiply
    71,459.20x = 98,613.96 × 39,631.04
  4. Step 4: Simplify right side
    71,459.20x = 3,908,173,793.32
  5. Step 5: Solve for x
    x = 3,908,173,793.32/71,459.20
  6. Step 6: Final answer
    x = 54,690.98

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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.