Home / 71,987.68-108,045.65-71,719.75

Finding the Fourth Proportional to 71,987.68, 108,045.65 and 71,719.75

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Solution

The fourth proportional to 71,987.68, 108,045.65 and 71,719.75 is: 107,643.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,987.68 : 108,045.65 = 71,719.75 : x
  2. Step 2: Convert to fraction form
    71,987.68/108,045.65 = 71,719.75/x
  3. Step 3: Cross multiply
    71,987.68x = 108,045.65 × 71,719.75
  4. Step 4: Simplify right side
    71,987.68x = 7,749,007,006.59
  5. Step 5: Solve for x
    x = 7,749,007,006.59/71,987.68
  6. Step 6: Final answer
    x = 107,643.52

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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.