Home / 83,565.39-115,321.81-51,283.85

Finding the Fourth Proportional to 83,565.39, 115,321.81 and 51,283.85

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Solution

The fourth proportional to 83,565.39, 115,321.81 and 51,283.85 is: 70,772.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,565.39 : 115,321.81 = 51,283.85 : x
  2. Step 2: Convert to fraction form
    83,565.39/115,321.81 = 51,283.85/x
  3. Step 3: Cross multiply
    83,565.39x = 115,321.81 × 51,283.85
  4. Step 4: Simplify right side
    83,565.39x = 5,914,146,325.72
  5. Step 5: Solve for x
    x = 5,914,146,325.72/83,565.39
  6. Step 6: Final answer
    x = 70,772.67

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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.