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Finding the Fourth Proportional to 85,500.70, 128,251.08 and 22,320.64

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Solution

The fourth proportional to 85,500.70, 128,251.08 and 22,320.64 is: 33,480.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,500.70 : 128,251.08 = 22,320.64 : x
  2. Step 2: Convert to fraction form
    85,500.70/128,251.08 = 22,320.64/x
  3. Step 3: Cross multiply
    85,500.70x = 128,251.08 × 22,320.64
  4. Step 4: Simplify right side
    85,500.70x = 2,862,646,186.29
  5. Step 5: Solve for x
    x = 2,862,646,186.29/85,500.70
  6. Step 6: Final answer
    x = 33,480.97

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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.