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Finding the Fourth Proportional to 80,200.28, 110,422.80 and 70,633.40

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Solution

The fourth proportional to 80,200.28, 110,422.80 and 70,633.40 is: 97,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,200.28 : 110,422.80 = 70,633.40 : x
  2. Step 2: Convert to fraction form
    80,200.28/110,422.80 = 70,633.40/x
  3. Step 3: Cross multiply
    80,200.28x = 110,422.80 × 70,633.40
  4. Step 4: Simplify right side
    80,200.28x = 7,799,537,801.52
  5. Step 5: Solve for x
    x = 7,799,537,801.52/80,200.28
  6. Step 6: Final answer
    x = 97,250.76

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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.