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Finding the Fourth Proportional to 82,770.90, 124,207.65 and 43,356.30

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Solution

The fourth proportional to 82,770.90, 124,207.65 and 43,356.30 is: 65,061.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,770.90 : 124,207.65 = 43,356.30 : x
  2. Step 2: Convert to fraction form
    82,770.90/124,207.65 = 43,356.30/x
  3. Step 3: Cross multiply
    82,770.90x = 124,207.65 × 43,356.30
  4. Step 4: Simplify right side
    82,770.90x = 5,385,184,135.70
  5. Step 5: Solve for x
    x = 5,385,184,135.70/82,770.90
  6. Step 6: Final answer
    x = 65,061.32

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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.