Home / 85,536,581.90-128,304,872.85-84,780,754.70

Finding the Fourth Proportional to 85,536,581.90, 128,304,872.85 and 84,780,754.70

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Solution

The fourth proportional to 85,536,581.90, 128,304,872.85 and 84,780,754.70 is: 127,171,132.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,581.90 : 128,304,872.85 = 84,780,754.70 : x
  2. Step 2: Convert to fraction form
    85,536,581.90/128,304,872.85 = 84,780,754.70/x
  3. Step 3: Cross multiply
    85,536,581.90x = 128,304,872.85 × 84,780,754.70
  4. Step 4: Simplify right side
    85,536,581.90x = 10,877,783,951,910,540
  5. Step 5: Solve for x
    x = 10,877,783,951,910,540/85,536,581.90
  6. Step 6: Final answer
    x = 127,171,132.05

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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.