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Finding the Fourth Proportional to 85,284.80, 127,951.80 and 26,129.18

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Solution

The fourth proportional to 85,284.80, 127,951.80 and 26,129.18 is: 39,201.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,284.80 : 127,951.80 = 26,129.18 : x
  2. Step 2: Convert to fraction form
    85,284.80/127,951.80 = 26,129.18/x
  3. Step 3: Cross multiply
    85,284.80x = 127,951.80 × 26,129.18
  4. Step 4: Simplify right side
    85,284.80x = 3,343,275,982.40
  5. Step 5: Solve for x
    x = 3,343,275,982.40/85,284.80
  6. Step 6: Final answer
    x = 39,201.31

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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.