Home / 7,172,127.89-9,897,248.30-3,908,872.54

Finding the Fourth Proportional to 7,172,127.89, 9,897,248.30 and 3,908,872.54

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Solution

The fourth proportional to 7,172,127.89, 9,897,248.30 and 3,908,872.54 is: 5,394,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172,127.89 : 9,897,248.30 = 3,908,872.54 : x
  2. Step 2: Convert to fraction form
    7,172,127.89/9,897,248.30 = 3,908,872.54/x
  3. Step 3: Cross multiply
    7,172,127.89x = 9,897,248.30 × 3,908,872.54
  4. Step 4: Simplify right side
    7,172,127.89x = 38,687,082,060,574.27
  5. Step 5: Solve for x
    x = 38,687,082,060,574.27/7,172,127.89
  6. Step 6: Final answer
    x = 5,394,087.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.