Home / 7,172,124.38-9,897,242.92-3,908,868.87

Finding the Fourth Proportional to 7,172,124.38, 9,897,242.92 and 3,908,868.87

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Solution

The fourth proportional to 7,172,124.38, 9,897,242.92 and 3,908,868.87 is: 5,394,081.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172,124.38 : 9,897,242.92 = 3,908,868.87 : x
  2. Step 2: Convert to fraction form
    7,172,124.38/9,897,242.92 = 3,908,868.87/x
  3. Step 3: Cross multiply
    7,172,124.38x = 9,897,242.92 × 3,908,868.87
  4. Step 4: Simplify right side
    7,172,124.38x = 38,687,024,776,158.39
  5. Step 5: Solve for x
    x = 38,687,024,776,158.39/7,172,124.38
  6. Step 6: Final answer
    x = 5,394,081.69

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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.