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Finding the Fourth Proportional to 80,691.84, 121,087.08 and 47,476.80

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Solution

The fourth proportional to 80,691.84, 121,087.08 and 47,476.80 is: 71,244.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,691.84 : 121,087.08 = 47,476.80 : x
  2. Step 2: Convert to fraction form
    80,691.84/121,087.08 = 47,476.80/x
  3. Step 3: Cross multiply
    80,691.84x = 121,087.08 × 47,476.80
  4. Step 4: Simplify right side
    80,691.84x = 5,748,827,079.74
  5. Step 5: Solve for x
    x = 5,748,827,079.74/80,691.84
  6. Step 6: Final answer
    x = 71,244.22

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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.