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Finding the Fourth Proportional to 88,990.70, 133,481.88 and 25,808.90

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Solution

The fourth proportional to 88,990.70, 133,481.88 and 25,808.90 is: 38,712.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,990.70 : 133,481.88 = 25,808.90 : x
  2. Step 2: Convert to fraction form
    88,990.70/133,481.88 = 25,808.90/x
  3. Step 3: Cross multiply
    88,990.70x = 133,481.88 × 25,808.90
  4. Step 4: Simplify right side
    88,990.70x = 3,445,020,492.73
  5. Step 5: Solve for x
    x = 3,445,020,492.73/88,990.70
  6. Step 6: Final answer
    x = 38,712.14

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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.