Home / 71,519.28-98,697.68-39,690.24

Finding the Fourth Proportional to 71,519.28, 98,697.68 and 39,690.24

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Solution

The fourth proportional to 71,519.28, 98,697.68 and 39,690.24 is: 54,773.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,519.28 : 98,697.68 = 39,690.24 : x
  2. Step 2: Convert to fraction form
    71,519.28/98,697.68 = 39,690.24/x
  3. Step 3: Cross multiply
    71,519.28x = 98,697.68 × 39,690.24
  4. Step 4: Simplify right side
    71,519.28x = 3,917,334,606.64
  5. Step 5: Solve for x
    x = 3,917,334,606.64/71,519.28
  6. Step 6: Final answer
    x = 54,773.13

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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.