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Finding the Fourth Proportional to 82,279.68, 123,419.52 and 19,950.16

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Solution

The fourth proportional to 82,279.68, 123,419.52 and 19,950.16 is: 29,925.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,279.68 : 123,419.52 = 19,950.16 : x
  2. Step 2: Convert to fraction form
    82,279.68/123,419.52 = 19,950.16/x
  3. Step 3: Cross multiply
    82,279.68x = 123,419.52 × 19,950.16
  4. Step 4: Simplify right side
    82,279.68x = 2,462,239,171.12
  5. Step 5: Solve for x
    x = 2,462,239,171.12/82,279.68
  6. Step 6: Final answer
    x = 29,925.24

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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.