Home / 42,135.12-63,202.68-12,552.19

Finding the Fourth Proportional to 42,135.12, 63,202.68 and 12,552.19

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Solution

The fourth proportional to 42,135.12, 63,202.68 and 12,552.19 is: 18,828.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,135.12 : 63,202.68 = 12,552.19 : x
  2. Step 2: Convert to fraction form
    42,135.12/63,202.68 = 12,552.19/x
  3. Step 3: Cross multiply
    42,135.12x = 63,202.68 × 12,552.19
  4. Step 4: Simplify right side
    42,135.12x = 793,332,047.87
  5. Step 5: Solve for x
    x = 793,332,047.87/42,135.12
  6. Step 6: Final answer
    x = 18,828.29

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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.