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Finding the Fourth Proportional to 84,788.80, 127,240.80 and 47,348.80

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Solution

The fourth proportional to 84,788.80, 127,240.80 and 47,348.80 is: 71,055.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,788.80 : 127,240.80 = 47,348.80 : x
  2. Step 2: Convert to fraction form
    84,788.80/127,240.80 = 47,348.80/x
  3. Step 3: Cross multiply
    84,788.80x = 127,240.80 × 47,348.80
  4. Step 4: Simplify right side
    84,788.80x = 6,024,699,191.04
  5. Step 5: Solve for x
    x = 6,024,699,191.04/84,788.80
  6. Step 6: Final answer
    x = 71,055.37

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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.