Home / 42,135.26-63,221.32-19,964.48

Finding the Fourth Proportional to 42,135.26, 63,221.32 and 19,964.48

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Solution

The fourth proportional to 42,135.26, 63,221.32 and 19,964.48 is: 29,955.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,135.26 : 63,221.32 = 19,964.48 : x
  2. Step 2: Convert to fraction form
    42,135.26/63,221.32 = 19,964.48/x
  3. Step 3: Cross multiply
    42,135.26x = 63,221.32 × 19,964.48
  4. Step 4: Simplify right side
    42,135.26x = 1,262,180,778.71
  5. Step 5: Solve for x
    x = 1,262,180,778.71/42,135.26
  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.