Home / 72,020,981.91-99,388,947.66-38,981,225.23

Finding the Fourth Proportional to 72,020,981.91, 99,388,947.66 and 38,981,225.23

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Solution

The fourth proportional to 72,020,981.91, 99,388,947.66 and 38,981,225.23 is: 53,794,086.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,020,981.91 : 99,388,947.66 = 38,981,225.23 : x
  2. Step 2: Convert to fraction form
    72,020,981.91/99,388,947.66 = 38,981,225.23/x
  3. Step 3: Cross multiply
    72,020,981.91x = 99,388,947.66 × 38,981,225.23
  4. Step 4: Simplify right side
    72,020,981.91x = 3,874,302,954,107,141
  5. Step 5: Solve for x
    x = 3,874,302,954,107,141/72,020,981.91
  6. Step 6: Final answer
    x = 53,794,086.83

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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.