Home / 42,299.90-63,456.23-18,290.78

Finding the Fourth Proportional to 42,299.90, 63,456.23 and 18,290.78

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Solution

The fourth proportional to 42,299.90, 63,456.23 and 18,290.78 is: 27,438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,299.90 : 63,456.23 = 18,290.78 : x
  2. Step 2: Convert to fraction form
    42,299.90/63,456.23 = 18,290.78/x
  3. Step 3: Cross multiply
    42,299.90x = 63,456.23 × 18,290.78
  4. Step 4: Simplify right side
    42,299.90x = 1,160,663,602.41
  5. Step 5: Solve for x
    x = 1,160,663,602.41/42,299.90
  6. Step 6: Final answer
    x = 27,438.92

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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.