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Finding the Fourth Proportional to 63,124.40, 87,120.01 and 40,156.46

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Solution

The fourth proportional to 63,124.40, 87,120.01 and 40,156.46 is: 55,421.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,124.40 : 87,120.01 = 40,156.46 : x
  2. Step 2: Convert to fraction form
    63,124.40/87,120.01 = 40,156.46/x
  3. Step 3: Cross multiply
    63,124.40x = 87,120.01 × 40,156.46
  4. Step 4: Simplify right side
    63,124.40x = 3,498,431,314.17
  5. Step 5: Solve for x
    x = 3,498,431,314.17/63,124.40
  6. Step 6: Final answer
    x = 55,421.22

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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.