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Finding the Fourth Proportional to 84,353.40, 126,531.54 and 25,189.74

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Solution

The fourth proportional to 84,353.40, 126,531.54 and 25,189.74 is: 37,785.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,353.40 : 126,531.54 = 25,189.74 : x
  2. Step 2: Convert to fraction form
    84,353.40/126,531.54 = 25,189.74/x
  3. Step 3: Cross multiply
    84,353.40x = 126,531.54 × 25,189.74
  4. Step 4: Simplify right side
    84,353.40x = 3,187,296,594.40
  5. Step 5: Solve for x
    x = 3,187,296,594.40/84,353.40
  6. Step 6: Final answer
    x = 37,785.04

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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.