Home / 42,200.46-63,309.78-12,620.70

Finding the Fourth Proportional to 42,200.46, 63,309.78 and 12,620.70

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Solution

The fourth proportional to 42,200.46, 63,309.78 and 12,620.70 is: 18,933.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,200.46 : 63,309.78 = 12,620.70 : x
  2. Step 2: Convert to fraction form
    42,200.46/63,309.78 = 12,620.70/x
  3. Step 3: Cross multiply
    42,200.46x = 63,309.78 × 12,620.70
  4. Step 4: Simplify right side
    42,200.46x = 799,013,740.45
  5. Step 5: Solve for x
    x = 799,013,740.45/42,200.46
  6. Step 6: Final answer
    x = 18,933.77

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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.