Home / 84,940,542.81-126,790,716.15-72,887,460.93

Finding the Fourth Proportional to 84,940,542.81, 126,790,716.15 and 72,887,460.93

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Solution

The fourth proportional to 84,940,542.81, 126,790,716.15 and 72,887,460.93 is: 108,799,085.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,940,542.81 : 126,790,716.15 = 72,887,460.93 : x
  2. Step 2: Convert to fraction form
    84,940,542.81/126,790,716.15 = 72,887,460.93/x
  3. Step 3: Cross multiply
    84,940,542.81x = 126,790,716.15 × 72,887,460.93
  4. Step 4: Simplify right side
    84,940,542.81x = 9,241,453,369,669,846
  5. Step 5: Solve for x
    x = 9,241,453,369,669,846/84,940,542.81
  6. Step 6: Final answer
    x = 108,799,085.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.