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Finding the Fourth Proportional to 63,355.80, 87,422.36 and 37,856.78

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Solution

The fourth proportional to 63,355.80, 87,422.36 and 37,856.78 is: 52,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,355.80 : 87,422.36 = 37,856.78 : x
  2. Step 2: Convert to fraction form
    63,355.80/87,422.36 = 37,856.78/x
  3. Step 3: Cross multiply
    63,355.80x = 87,422.36 × 37,856.78
  4. Step 4: Simplify right side
    63,355.80x = 3,309,528,423.21
  5. Step 5: Solve for x
    x = 3,309,528,423.21/63,355.80
  6. Step 6: Final answer
    x = 52,237.18

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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.