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Finding the Fourth Proportional to 88,721.20, 133,081.80 and 36,168.40

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Solution

The fourth proportional to 88,721.20, 133,081.80 and 36,168.40 is: 54,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,721.20 : 133,081.80 = 36,168.40 : x
  2. Step 2: Convert to fraction form
    88,721.20/133,081.80 = 36,168.40/x
  3. Step 3: Cross multiply
    88,721.20x = 133,081.80 × 36,168.40
  4. Step 4: Simplify right side
    88,721.20x = 4,813,355,775.12
  5. Step 5: Solve for x
    x = 4,813,355,775.12/88,721.20
  6. Step 6: Final answer
    x = 54,252.60

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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.