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Finding the Fourth Proportional to 86,115.66, 118,839.66 and 49,822.20

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Solution

The fourth proportional to 86,115.66, 118,839.66 and 49,822.20 is: 68,754.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,115.66 : 118,839.66 = 49,822.20 : x
  2. Step 2: Convert to fraction form
    86,115.66/118,839.66 = 49,822.20/x
  3. Step 3: Cross multiply
    86,115.66x = 118,839.66 × 49,822.20
  4. Step 4: Simplify right side
    86,115.66x = 5,920,853,308.45
  5. Step 5: Solve for x
    x = 5,920,853,308.45/86,115.66
  6. Step 6: Final answer
    x = 68,754.66

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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.