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Finding the Fourth Proportional to 63,178.81, 87,173.53 and 36,979.90

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Solution

The fourth proportional to 63,178.81, 87,173.53 and 36,979.90 is: 51,024.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,178.81 : 87,173.53 = 36,979.90 : x
  2. Step 2: Convert to fraction form
    63,178.81/87,173.53 = 36,979.90/x
  3. Step 3: Cross multiply
    63,178.81x = 87,173.53 × 36,979.90
  4. Step 4: Simplify right side
    63,178.81x = 3,223,668,422.05
  5. Step 5: Solve for x
    x = 3,223,668,422.05/63,178.81
  6. Step 6: Final answer
    x = 51,024.52

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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.