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Finding the Fourth Proportional to 80,445.56, 110,621.19 and 69,816.74

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Solution

The fourth proportional to 80,445.56, 110,621.19 and 69,816.74 is: 96,005.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,445.56 : 110,621.19 = 69,816.74 : x
  2. Step 2: Convert to fraction form
    80,445.56/110,621.19 = 69,816.74/x
  3. Step 3: Cross multiply
    80,445.56x = 110,621.19 × 69,816.74
  4. Step 4: Simplify right side
    80,445.56x = 7,723,210,569.43
  5. Step 5: Solve for x
    x = 7,723,210,569.43/80,445.56
  6. Step 6: Final answer
    x = 96,005.44

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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.