Home / 67,218,195.40-100,839,734.70-21,781,472.20

Finding the Fourth Proportional to 67,218,195.40, 100,839,734.70 and 21,781,472.20

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Solution

The fourth proportional to 67,218,195.40, 100,839,734.70 and 21,781,472.20 is: 32,676,239.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,218,195.40 : 100,839,734.70 = 21,781,472.20 : x
  2. Step 2: Convert to fraction form
    67,218,195.40/100,839,734.70 = 21,781,472.20/x
  3. Step 3: Cross multiply
    67,218,195.40x = 100,839,734.70 × 21,781,472.20
  4. Step 4: Simplify right side
    67,218,195.40x = 2,196,437,878,023,425.25
  5. Step 5: Solve for x
    x = 2,196,437,878,023,425.25/67,218,195.40
  6. Step 6: Final answer
    x = 32,676,239.89

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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.