Home / 89,436.40-133,960.20-54,314.80

Finding the Fourth Proportional to 89,436.40, 133,960.20 and 54,314.80

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Solution

The fourth proportional to 89,436.40, 133,960.20 and 54,314.80 is: 81,354.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,436.40 : 133,960.20 = 54,314.80 : x
  2. Step 2: Convert to fraction form
    89,436.40/133,960.20 = 54,314.80/x
  3. Step 3: Cross multiply
    89,436.40x = 133,960.20 × 54,314.80
  4. Step 4: Simplify right side
    89,436.40x = 7,276,021,470.96
  5. Step 5: Solve for x
    x = 7,276,021,470.96/89,436.40
  6. Step 6: Final answer
    x = 81,354.14

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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.