Home / 71,910,337.29-99,236,222.64-38,870,586.86

Finding the Fourth Proportional to 71,910,337.29, 99,236,222.64 and 38,870,586.86

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Solution

The fourth proportional to 71,910,337.29, 99,236,222.64 and 38,870,586.86 is: 53,641,386.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,910,337.29 : 99,236,222.64 = 38,870,586.86 : x
  2. Step 2: Convert to fraction form
    71,910,337.29/99,236,222.64 = 38,870,586.86/x
  3. Step 3: Cross multiply
    71,910,337.29x = 99,236,222.64 × 38,870,586.86
  4. Step 4: Simplify right side
    71,910,337.29x = 3,857,370,212,131,685
  5. Step 5: Solve for x
    x = 3,857,370,212,131,685/71,910,337.29
  6. Step 6: Final answer
    x = 53,641,386.72

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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.