Home / 42,203.25-63,207.95-21,078.45

Finding the Fourth Proportional to 42,203.25, 63,207.95 and 21,078.45

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Solution

The fourth proportional to 42,203.25, 63,207.95 and 21,078.45 is: 31,569.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,203.25 : 63,207.95 = 21,078.45 : x
  2. Step 2: Convert to fraction form
    42,203.25/63,207.95 = 21,078.45/x
  3. Step 3: Cross multiply
    42,203.25x = 63,207.95 × 21,078.45
  4. Step 4: Simplify right side
    42,203.25x = 1,332,325,508.29
  5. Step 5: Solve for x
    x = 1,332,325,508.29/42,203.25
  6. Step 6: Final answer
    x = 31,569.26

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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.