Home / 83,835.32-115,685.88-49,374.60

Finding the Fourth Proportional to 83,835.32, 115,685.88 and 49,374.60

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Solution

The fourth proportional to 83,835.32, 115,685.88 and 49,374.60 is: 68,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,835.32 : 115,685.88 = 49,374.60 : x
  2. Step 2: Convert to fraction form
    83,835.32/115,685.88 = 49,374.60/x
  3. Step 3: Cross multiply
    83,835.32x = 115,685.88 × 49,374.60
  4. Step 4: Simplify right side
    83,835.32x = 5,711,944,050.65
  5. Step 5: Solve for x
    x = 5,711,944,050.65/83,835.32
  6. Step 6: Final answer
    x = 68,132.91

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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.