Home / 78,796,456.52-108,768,127.38-47,435,963.72

Finding the Fourth Proportional to 78,796,456.52, 108,768,127.38 and 47,435,963.72

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Solution

The fourth proportional to 78,796,456.52, 108,768,127.38 and 47,435,963.72 is: 65,479,098.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,796,456.52 : 108,768,127.38 = 47,435,963.72 : x
  2. Step 2: Convert to fraction form
    78,796,456.52/108,768,127.38 = 47,435,963.72/x
  3. Step 3: Cross multiply
    78,796,456.52x = 108,768,127.38 × 47,435,963.72
  4. Step 4: Simplify right side
    78,796,456.52x = 5,159,520,944,290,018
  5. Step 5: Solve for x
    x = 5,159,520,944,290,018/78,796,456.52
  6. Step 6: Final answer
    x = 65,479,098.58

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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.