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Finding the Fourth Proportional to 82,447.20, 123,670.80 and 40,888.80

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Solution

The fourth proportional to 82,447.20, 123,670.80 and 40,888.80 is: 61,333.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,447.20 : 123,670.80 = 40,888.80 : x
  2. Step 2: Convert to fraction form
    82,447.20/123,670.80 = 40,888.80/x
  3. Step 3: Cross multiply
    82,447.20x = 123,670.80 × 40,888.80
  4. Step 4: Simplify right side
    82,447.20x = 5,056,750,607.04
  5. Step 5: Solve for x
    x = 5,056,750,607.04/82,447.20
  6. Step 6: Final answer
    x = 61,333.20

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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.