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Finding the Fourth Proportional to 63,478.16, 87,605.52 and 40,871.16

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Solution

The fourth proportional to 63,478.16, 87,605.52 and 40,871.16 is: 56,405.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,478.16 : 87,605.52 = 40,871.16 : x
  2. Step 2: Convert to fraction form
    63,478.16/87,605.52 = 40,871.16/x
  3. Step 3: Cross multiply
    63,478.16x = 87,605.52 × 40,871.16
  4. Step 4: Simplify right side
    63,478.16x = 3,580,539,170.00
  5. Step 5: Solve for x
    x = 3,580,539,170.00/63,478.16
  6. Step 6: Final answer
    x = 56,405.85

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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.