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Finding the Fourth Proportional to 84,672.60, 126,960.30 and 25,499.40

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Solution

The fourth proportional to 84,672.60, 126,960.30 and 25,499.40 is: 38,234.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,672.60 : 126,960.30 = 25,499.40 : x
  2. Step 2: Convert to fraction form
    84,672.60/126,960.30 = 25,499.40/x
  3. Step 3: Cross multiply
    84,672.60x = 126,960.30 × 25,499.40
  4. Step 4: Simplify right side
    84,672.60x = 3,237,411,473.82
  5. Step 5: Solve for x
    x = 3,237,411,473.82/84,672.60
  6. Step 6: Final answer
    x = 38,234.46

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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.