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Finding the Fourth Proportional to 89,358.40, 133,972.80 and 36,740.80

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Solution

The fourth proportional to 89,358.40, 133,972.80 and 36,740.80 is: 55,084.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,358.40 : 133,972.80 = 36,740.80 : x
  2. Step 2: Convert to fraction form
    89,358.40/133,972.80 = 36,740.80/x
  3. Step 3: Cross multiply
    89,358.40x = 133,972.80 × 36,740.80
  4. Step 4: Simplify right side
    89,358.40x = 4,922,267,850.24
  5. Step 5: Solve for x
    x = 4,922,267,850.24/89,358.40
  6. Step 6: Final answer
    x = 55,084.56

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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.