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Finding the Fourth Proportional to 80,883.30, 121,324.95 and 61,200.30

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Solution

The fourth proportional to 80,883.30, 121,324.95 and 61,200.30 is: 91,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,883.30 : 121,324.95 = 61,200.30 : x
  2. Step 2: Convert to fraction form
    80,883.30/121,324.95 = 61,200.30/x
  3. Step 3: Cross multiply
    80,883.30x = 121,324.95 × 61,200.30
  4. Step 4: Simplify right side
    80,883.30x = 7,425,123,337.49
  5. Step 5: Solve for x
    x = 7,425,123,337.49/80,883.30
  6. Step 6: Final answer
    x = 91,800.45

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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.