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Finding the Fourth Proportional to 83,795.55, 125,715.60 and 36,390.30

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Solution

The fourth proportional to 83,795.55, 125,715.60 and 36,390.30 is: 54,595.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,795.55 : 125,715.60 = 36,390.30 : x
  2. Step 2: Convert to fraction form
    83,795.55/125,715.60 = 36,390.30/x
  3. Step 3: Cross multiply
    83,795.55x = 125,715.60 × 36,390.30
  4. Step 4: Simplify right side
    83,795.55x = 4,574,828,398.68
  5. Step 5: Solve for x
    x = 4,574,828,398.68/83,795.55
  6. Step 6: Final answer
    x = 54,595.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.