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Finding the Fourth Proportional to 80,711.84, 121,087.17 and 25,307.84

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Solution

The fourth proportional to 80,711.84, 121,087.17 and 25,307.84 is: 37,967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,711.84 : 121,087.17 = 25,307.84 : x
  2. Step 2: Convert to fraction form
    80,711.84/121,087.17 = 25,307.84/x
  3. Step 3: Cross multiply
    80,711.84x = 121,087.17 × 25,307.84
  4. Step 4: Simplify right side
    80,711.84x = 3,064,454,118.98
  5. Step 5: Solve for x
    x = 3,064,454,118.98/80,711.84
  6. Step 6: Final answer
    x = 37,967.84

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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.