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Finding the Fourth Proportional to 63,868.92, 88,137.90 and 40,008.75

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Solution

The fourth proportional to 63,868.92, 88,137.90 and 40,008.75 is: 55,211.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,868.92 : 88,137.90 = 40,008.75 : x
  2. Step 2: Convert to fraction form
    63,868.92/88,137.90 = 40,008.75/x
  3. Step 3: Cross multiply
    63,868.92x = 88,137.90 × 40,008.75
  4. Step 4: Simplify right side
    63,868.92x = 3,526,287,206.63
  5. Step 5: Solve for x
    x = 3,526,287,206.63/63,868.92
  6. Step 6: Final answer
    x = 55,211.32

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1.5x scale

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.