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Finding the Fourth Proportional to 88,788.20, 133,068.90 and 36,138.20

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Solution

The fourth proportional to 88,788.20, 133,068.90 and 36,138.20 is: 54,161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,788.20 : 133,068.90 = 36,138.20 : x
  2. Step 2: Convert to fraction form
    88,788.20/133,068.90 = 36,138.20/x
  3. Step 3: Cross multiply
    88,788.20x = 133,068.90 × 36,138.20
  4. Step 4: Simplify right side
    88,788.20x = 4,808,870,521.98
  5. Step 5: Solve for x
    x = 4,808,870,521.98/88,788.20
  6. Step 6: Final answer
    x = 54,161.14

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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.