Home / 89,432.40-133,954.20-54,310.80

Finding the Fourth Proportional to 89,432.40, 133,954.20 and 54,310.80

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Solution

The fourth proportional to 89,432.40, 133,954.20 and 54,310.80 is: 81,348.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,432.40 : 133,954.20 = 54,310.80 : x
  2. Step 2: Convert to fraction form
    89,432.40/133,954.20 = 54,310.80/x
  3. Step 3: Cross multiply
    89,432.40x = 133,954.20 × 54,310.80
  4. Step 4: Simplify right side
    89,432.40x = 7,275,159,765.36
  5. Step 5: Solve for x
    x = 7,275,159,765.36/89,432.40
  6. Step 6: Final answer
    x = 81,348.14

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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.