Home / 80,686.29-111,270.65-51,623.85

Finding the Fourth Proportional to 80,686.29, 111,270.65 and 51,623.85

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Solution

The fourth proportional to 80,686.29, 111,270.65 and 51,623.85 is: 71,192.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,686.29 : 111,270.65 = 51,623.85 : x
  2. Step 2: Convert to fraction form
    80,686.29/111,270.65 = 51,623.85/x
  3. Step 3: Cross multiply
    80,686.29x = 111,270.65 × 51,623.85
  4. Step 4: Simplify right side
    80,686.29x = 5,744,219,345.00
  5. Step 5: Solve for x
    x = 5,744,219,345.00/80,686.29
  6. Step 6: Final answer
    x = 71,192.02

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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.