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Finding the Fourth Proportional to 84,861.60, 127,276.20 and 25,699.20

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Solution

The fourth proportional to 84,861.60, 127,276.20 and 25,699.20 is: 38,543.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,861.60 : 127,276.20 = 25,699.20 : x
  2. Step 2: Convert to fraction form
    84,861.60/127,276.20 = 25,699.20/x
  3. Step 3: Cross multiply
    84,861.60x = 127,276.20 × 25,699.20
  4. Step 4: Simplify right side
    84,861.60x = 3,270,896,519.04
  5. Step 5: Solve for x
    x = 3,270,896,519.04/84,861.60
  6. Step 6: Final answer
    x = 38,543.89

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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.