Home / 81,400.83-112,332.16-47,414.85

Finding the Fourth Proportional to 81,400.83, 112,332.16 and 47,414.85

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Solution

The fourth proportional to 81,400.83, 112,332.16 and 47,414.85 is: 65,431.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,400.83 : 112,332.16 = 47,414.85 : x
  2. Step 2: Convert to fraction form
    81,400.83/112,332.16 = 47,414.85/x
  3. Step 3: Cross multiply
    81,400.83x = 112,332.16 × 47,414.85
  4. Step 4: Simplify right side
    81,400.83x = 5,326,212,516.58
  5. Step 5: Solve for x
    x = 5,326,212,516.58/81,400.83
  6. Step 6: Final answer
    x = 65,431.92

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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.