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Finding the Fourth Proportional to 84,013.20, 126,030.60 and 41,914.80

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Solution

The fourth proportional to 84,013.20, 126,030.60 and 41,914.80 is: 62,877.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,013.20 : 126,030.60 = 41,914.80 : x
  2. Step 2: Convert to fraction form
    84,013.20/126,030.60 = 41,914.80/x
  3. Step 3: Cross multiply
    84,013.20x = 126,030.60 × 41,914.80
  4. Step 4: Simplify right side
    84,013.20x = 5,282,547,392.88
  5. Step 5: Solve for x
    x = 5,282,547,392.88/84,013.20
  6. Step 6: Final answer
    x = 62,877.59

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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.