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Finding the Fourth Proportional to 65,672.26, 90,627.60 and 38,824.42

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Solution

The fourth proportional to 65,672.26, 90,627.60 and 38,824.42 is: 53,577.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,672.26 : 90,627.60 = 38,824.42 : x
  2. Step 2: Convert to fraction form
    65,672.26/90,627.60 = 38,824.42/x
  3. Step 3: Cross multiply
    65,672.26x = 90,627.60 × 38,824.42
  4. Step 4: Simplify right side
    65,672.26x = 3,518,564,005.99
  5. Step 5: Solve for x
    x = 3,518,564,005.99/65,672.26
  6. Step 6: Final answer
    x = 53,577.63

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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.