Home / 74,474.10-111,711.15-42,981.30

Finding the Fourth Proportional to 74,474.10, 111,711.15 and 42,981.30

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Solution

The fourth proportional to 74,474.10, 111,711.15 and 42,981.30 is: 64,471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,474.10 : 111,711.15 = 42,981.30 : x
  2. Step 2: Convert to fraction form
    74,474.10/111,711.15 = 42,981.30/x
  3. Step 3: Cross multiply
    74,474.10x = 111,711.15 × 42,981.30
  4. Step 4: Simplify right side
    74,474.10x = 4,801,490,451.50
  5. Step 5: Solve for x
    x = 4,801,490,451.50/74,474.10
  6. Step 6: Final answer
    x = 64,471.95

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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.