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Finding the Fourth Proportional to 86,310.60, 129,465.90 and 23,981.10

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Solution

The fourth proportional to 86,310.60, 129,465.90 and 23,981.10 is: 35,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,310.60 : 129,465.90 = 23,981.10 : x
  2. Step 2: Convert to fraction form
    86,310.60/129,465.90 = 23,981.10/x
  3. Step 3: Cross multiply
    86,310.60x = 129,465.90 × 23,981.10
  4. Step 4: Simplify right side
    86,310.60x = 3,104,734,694.49
  5. Step 5: Solve for x
    x = 3,104,734,694.49/86,310.60
  6. Step 6: Final answer
    x = 35,971.65

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Similar ratio
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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.