Home / 72,021,124.92-99,389,144.64-38,981,368

Finding the Fourth Proportional to 72,021,124.92, 99,389,144.64 and 38,981,368

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Solution

The fourth proportional to 72,021,124.92, 99,389,144.64 and 38,981,368 is: 53,794,283.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021,124.92 : 99,389,144.64 = 38,981,368 : x
  2. Step 2: Convert to fraction form
    72,021,124.92/99,389,144.64 = 38,981,368/x
  3. Step 3: Cross multiply
    72,021,124.92x = 99,389,144.64 × 38,981,368
  4. Step 4: Simplify right side
    72,021,124.92x = 3,874,324,822,417,067.50
  5. Step 5: Solve for x
    x = 3,874,324,822,417,067.50/72,021,124.92
  6. Step 6: Final answer
    x = 53,794,283.65

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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.