Home / 42,352.33-63,553.08-18,978.78

Finding the Fourth Proportional to 42,352.33, 63,553.08 and 18,978.78

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Solution

The fourth proportional to 42,352.33, 63,553.08 and 18,978.78 is: 28,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,352.33 : 63,553.08 = 18,978.78 : x
  2. Step 2: Convert to fraction form
    42,352.33/63,553.08 = 18,978.78/x
  3. Step 3: Cross multiply
    42,352.33x = 63,553.08 × 18,978.78
  4. Step 4: Simplify right side
    42,352.33x = 1,206,159,923.64
  5. Step 5: Solve for x
    x = 1,206,159,923.64/42,352.33
  6. Step 6: Final answer
    x = 28,479.19

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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.