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Finding the Fourth Proportional to 63,490, 87,616.20 and 36,999.12

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Solution

The fourth proportional to 63,490, 87,616.20 and 36,999.12 is: 51,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,490 : 87,616.20 = 36,999.12 : x
  2. Step 2: Convert to fraction form
    63,490/87,616.20 = 36,999.12/x
  3. Step 3: Cross multiply
    63,490x = 87,616.20 × 36,999.12
  4. Step 4: Simplify right side
    63,490x = 3,241,722,297.74
  5. Step 5: Solve for x
    x = 3,241,722,297.74/63,490
  6. Step 6: Final answer
    x = 51,058.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.