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Finding the Fourth Proportional to 65,577.60, 90,494.48 and 38,728.73

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Solution

The fourth proportional to 65,577.60, 90,494.48 and 38,728.73 is: 53,444.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,577.60 : 90,494.48 = 38,728.73 : x
  2. Step 2: Convert to fraction form
    65,577.60/90,494.48 = 38,728.73/x
  3. Step 3: Cross multiply
    65,577.60x = 90,494.48 × 38,728.73
  4. Step 4: Simplify right side
    65,577.60x = 3,504,736,605.47
  5. Step 5: Solve for x
    x = 3,504,736,605.47/65,577.60
  6. Step 6: Final answer
    x = 53,444.11

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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.