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Finding the Fourth Proportional to 83,330.80, 115,050.20 and 74,362.88

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Solution

The fourth proportional to 83,330.80, 115,050.20 and 74,362.88 is: 102,668.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,330.80 : 115,050.20 = 74,362.88 : x
  2. Step 2: Convert to fraction form
    83,330.80/115,050.20 = 74,362.88/x
  3. Step 3: Cross multiply
    83,330.80x = 115,050.20 × 74,362.88
  4. Step 4: Simplify right side
    83,330.80x = 8,555,464,216.58
  5. Step 5: Solve for x
    x = 8,555,464,216.58/83,330.80
  6. Step 6: Final answer
    x = 102,668.69

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1.5x scale

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.