Home / 81,654,998.40-122,482,497.60-54,445,219.20

Finding the Fourth Proportional to 81,654,998.40, 122,482,497.60 and 54,445,219.20

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Solution

The fourth proportional to 81,654,998.40, 122,482,497.60 and 54,445,219.20 is: 81,667,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654,998.40 : 122,482,497.60 = 54,445,219.20 : x
  2. Step 2: Convert to fraction form
    81,654,998.40/122,482,497.60 = 54,445,219.20/x
  3. Step 3: Cross multiply
    81,654,998.40x = 122,482,497.60 × 54,445,219.20
  4. Step 4: Simplify right side
    81,654,998.40x = 6,668,586,429,995,474
  5. Step 5: Solve for x
    x = 6,668,586,429,995,474/81,654,998.40
  6. Step 6: Final answer
    x = 81,667,828.80

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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.