Home / 81,747.32-112,807.67-47,758.95

Finding the Fourth Proportional to 81,747.32, 112,807.67 and 47,758.95

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Solution

The fourth proportional to 81,747.32, 112,807.67 and 47,758.95 is: 65,905.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,747.32 : 112,807.67 = 47,758.95 : x
  2. Step 2: Convert to fraction form
    81,747.32/112,807.67 = 47,758.95/x
  3. Step 3: Cross multiply
    81,747.32x = 112,807.67 × 47,758.95
  4. Step 4: Simplify right side
    81,747.32x = 5,387,575,632.35
  5. Step 5: Solve for x
    x = 5,387,575,632.35/81,747.32
  6. Step 6: Final answer
    x = 65,905.23

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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.