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Finding the Fourth Proportional to 76,988.80, 115,481.94 and 24,398.20

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Solution

The fourth proportional to 76,988.80, 115,481.94 and 24,398.20 is: 36,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,988.80 : 115,481.94 = 24,398.20 : x
  2. Step 2: Convert to fraction form
    76,988.80/115,481.94 = 24,398.20/x
  3. Step 3: Cross multiply
    76,988.80x = 115,481.94 × 24,398.20
  4. Step 4: Simplify right side
    76,988.80x = 2,817,551,468.51
  5. Step 5: Solve for x
    x = 2,817,551,468.51/76,988.80
  6. Step 6: Final answer
    x = 36,596.90

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1.5x scale

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.