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Finding the Fourth Proportional to 89,902.40, 134,821.20 and 45,514.40

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Solution

The fourth proportional to 89,902.40, 134,821.20 and 45,514.40 is: 68,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,902.40 : 134,821.20 = 45,514.40 : x
  2. Step 2: Convert to fraction form
    89,902.40/134,821.20 = 45,514.40/x
  3. Step 3: Cross multiply
    89,902.40x = 134,821.20 × 45,514.40
  4. Step 4: Simplify right side
    89,902.40x = 6,136,306,025.28
  5. Step 5: Solve for x
    x = 6,136,306,025.28/89,902.40
  6. Step 6: Final answer
    x = 68,255.20

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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.