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Finding the Fourth Proportional to 63,825.55, 88,021.92 and 39,954.40

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Solution

The fourth proportional to 63,825.55, 88,021.92 and 39,954.40 is: 55,101.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,825.55 : 88,021.92 = 39,954.40 : x
  2. Step 2: Convert to fraction form
    63,825.55/88,021.92 = 39,954.40/x
  3. Step 3: Cross multiply
    63,825.55x = 88,021.92 × 39,954.40
  4. Step 4: Simplify right side
    63,825.55x = 3,516,863,000.45
  5. Step 5: Solve for x
    x = 3,516,863,000.45/63,825.55
  6. Step 6: Final answer
    x = 55,101.18

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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.