Home / 42,519.30-63,780-20,335.02

Finding the Fourth Proportional to 42,519.30, 63,780 and 20,335.02

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Solution

The fourth proportional to 42,519.30, 63,780 and 20,335.02 is: 30,503.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,519.30 : 63,780 = 20,335.02 : x
  2. Step 2: Convert to fraction form
    42,519.30/63,780 = 20,335.02/x
  3. Step 3: Cross multiply
    42,519.30x = 63,780 × 20,335.02
  4. Step 4: Simplify right side
    42,519.30x = 1,296,967,575.60
  5. Step 5: Solve for x
    x = 1,296,967,575.60/42,519.30
  6. Step 6: Final answer
    x = 30,503.03

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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.