Home / 42,981,814.20-64,472,721.30-38,278,889.40

Finding the Fourth Proportional to 42,981,814.20, 64,472,721.30 and 38,278,889.40

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Solution

The fourth proportional to 42,981,814.20, 64,472,721.30 and 38,278,889.40 is: 57,418,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,981,814.20 : 64,472,721.30 = 38,278,889.40 : x
  2. Step 2: Convert to fraction form
    42,981,814.20/64,472,721.30 = 38,278,889.40/x
  3. Step 3: Cross multiply
    42,981,814.20x = 64,472,721.30 × 38,278,889.40
  4. Step 4: Simplify right side
    42,981,814.20x = 2,467,944,167,959,724
  5. Step 5: Solve for x
    x = 2,467,944,167,959,724/42,981,814.20
  6. Step 6: Final answer
    x = 57,418,334.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.