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Finding the Fourth Proportional to 80,981.60, 111,806.64 and 50,808.32

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Solution

The fourth proportional to 80,981.60, 111,806.64 and 50,808.32 is: 70,148.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.60 : 111,806.64 = 50,808.32 : x
  2. Step 2: Convert to fraction form
    80,981.60/111,806.64 = 50,808.32/x
  3. Step 3: Cross multiply
    80,981.60x = 111,806.64 × 50,808.32
  4. Step 4: Simplify right side
    80,981.60x = 5,680,707,543.24
  5. Step 5: Solve for x
    x = 5,680,707,543.24/80,981.60
  6. Step 6: Final answer
    x = 70,148.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.