Home / 39,988,930.90-55,184,711.19-21,654,216.40

Finding the Fourth Proportional to 39,988,930.90, 55,184,711.19 and 21,654,216.40

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Solution

The fourth proportional to 39,988,930.90, 55,184,711.19 and 21,654,216.40 is: 29,882,811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988,930.90 : 55,184,711.19 = 21,654,216.40 : x
  2. Step 2: Convert to fraction form
    39,988,930.90/55,184,711.19 = 21,654,216.40/x
  3. Step 3: Cross multiply
    39,988,930.90x = 55,184,711.19 × 21,654,216.40
  4. Step 4: Simplify right side
    39,988,930.90x = 1,194,981,678,079,761.50
  5. Step 5: Solve for x
    x = 1,194,981,678,079,761.50/39,988,930.90
  6. Step 6: Final answer
    x = 29,882,811.35

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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.