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Finding the Fourth Proportional to 63,521.56, 87,699.90 and 40,871.08

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Solution

The fourth proportional to 63,521.56, 87,699.90 and 40,871.08 is: 56,427.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,521.56 : 87,699.90 = 40,871.08 : x
  2. Step 2: Convert to fraction form
    63,521.56/87,699.90 = 40,871.08/x
  3. Step 3: Cross multiply
    63,521.56x = 87,699.90 × 40,871.08
  4. Step 4: Simplify right side
    63,521.56x = 3,584,389,628.89
  5. Step 5: Solve for x
    x = 3,584,389,628.89/63,521.56
  6. Step 6: Final answer
    x = 56,427.92

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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.