Home / 83,678.27-115,485.45-49,695.02

Finding the Fourth Proportional to 83,678.27, 115,485.45 and 49,695.02

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Solution

The fourth proportional to 83,678.27, 115,485.45 and 49,695.02 is: 68,584.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,678.27 : 115,485.45 = 49,695.02 : x
  2. Step 2: Convert to fraction form
    83,678.27/115,485.45 = 49,695.02/x
  3. Step 3: Cross multiply
    83,678.27x = 115,485.45 × 49,695.02
  4. Step 4: Simplify right side
    83,678.27x = 5,739,051,416.75
  5. Step 5: Solve for x
    x = 5,739,051,416.75/83,678.27
  6. Step 6: Final answer
    x = 68,584.73

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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.