Home / 80,931.68-121,397.52-25,532

Finding the Fourth Proportional to 80,931.68, 121,397.52 and 25,532

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Solution

The fourth proportional to 80,931.68, 121,397.52 and 25,532 is: 38,298

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,931.68 : 121,397.52 = 25,532 : x
  2. Step 2: Convert to fraction form
    80,931.68/121,397.52 = 25,532/x
  3. Step 3: Cross multiply
    80,931.68x = 121,397.52 × 25,532
  4. Step 4: Simplify right side
    80,931.68x = 3,099,521,480.64
  5. Step 5: Solve for x
    x = 3,099,521,480.64/80,931.68
  6. Step 6: Final answer
    x = 38,298

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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.