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Finding the Fourth Proportional to 84,842.60, 127,247.70 and 25,680.20

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Solution

The fourth proportional to 84,842.60, 127,247.70 and 25,680.20 is: 38,515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,842.60 : 127,247.70 = 25,680.20 : x
  2. Step 2: Convert to fraction form
    84,842.60/127,247.70 = 25,680.20/x
  3. Step 3: Cross multiply
    84,842.60x = 127,247.70 × 25,680.20
  4. Step 4: Simplify right side
    84,842.60x = 3,267,746,385.54
  5. Step 5: Solve for x
    x = 3,267,746,385.54/84,842.60
  6. Step 6: Final answer
    x = 38,515.40

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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.