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Finding the Fourth Proportional to 45,199.80, 67,787.55 and 18,899.10

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Solution

The fourth proportional to 45,199.80, 67,787.55 and 18,899.10 is: 28,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,199.80 : 67,787.55 = 18,899.10 : x
  2. Step 2: Convert to fraction form
    45,199.80/67,787.55 = 18,899.10/x
  3. Step 3: Cross multiply
    45,199.80x = 67,787.55 × 18,899.10
  4. Step 4: Simplify right side
    45,199.80x = 1,281,123,686.21
  5. Step 5: Solve for x
    x = 1,281,123,686.21/45,199.80
  6. Step 6: Final answer
    x = 28,343.57

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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.