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Finding the Fourth Proportional to 84,793.20, 127,189.80 and 25,670.40

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Solution

The fourth proportional to 84,793.20, 127,189.80 and 25,670.40 is: 38,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,793.20 : 127,189.80 = 25,670.40 : x
  2. Step 2: Convert to fraction form
    84,793.20/127,189.80 = 25,670.40/x
  3. Step 3: Cross multiply
    84,793.20x = 127,189.80 × 25,670.40
  4. Step 4: Simplify right side
    84,793.20x = 3,265,013,041.92
  5. Step 5: Solve for x
    x = 3,265,013,041.92/84,793.20
  6. Step 6: Final answer
    x = 38,505.60

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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.