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Finding the Fourth Proportional to 80,424.64, 110,752.08 and 75,290.16

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Solution

The fourth proportional to 80,424.64, 110,752.08 and 75,290.16 is: 103,681.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,424.64 : 110,752.08 = 75,290.16 : x
  2. Step 2: Convert to fraction form
    80,424.64/110,752.08 = 75,290.16/x
  3. Step 3: Cross multiply
    80,424.64x = 110,752.08 × 75,290.16
  4. Step 4: Simplify right side
    80,424.64x = 8,338,541,823.53
  5. Step 5: Solve for x
    x = 8,338,541,823.53/80,424.64
  6. Step 6: Final answer
    x = 103,681.43

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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.