Home / 42,135.25-63,221.33-19,964.47

Finding the Fourth Proportional to 42,135.25, 63,221.33 and 19,964.47

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Solution

The fourth proportional to 42,135.25, 63,221.33 and 19,964.47 is: 29,955.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,135.25 : 63,221.33 = 19,964.47 : x
  2. Step 2: Convert to fraction form
    42,135.25/63,221.33 = 19,964.47/x
  3. Step 3: Cross multiply
    42,135.25x = 63,221.33 × 19,964.47
  4. Step 4: Simplify right side
    42,135.25x = 1,262,180,346.15
  5. Step 5: Solve for x
    x = 1,262,180,346.15/42,135.25
  6. Step 6: Final answer
    x = 29,955.45

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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.