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Finding the Fourth Proportional to 84,561.41, 126,750.41 and 42,339.68

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Solution

The fourth proportional to 84,561.41, 126,750.41 and 42,339.68 is: 63,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,561.41 : 126,750.41 = 42,339.68 : x
  2. Step 2: Convert to fraction form
    84,561.41/126,750.41 = 42,339.68/x
  3. Step 3: Cross multiply
    84,561.41x = 126,750.41 × 42,339.68
  4. Step 4: Simplify right side
    84,561.41x = 5,366,571,799.27
  5. Step 5: Solve for x
    x = 5,366,571,799.27/84,561.41
  6. Step 6: Final answer
    x = 63,463.60

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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.