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Finding the Fourth Proportional to 65,504.80, 90,380.76 and 38,265.40

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Solution

The fourth proportional to 65,504.80, 90,380.76 and 38,265.40 is: 52,796.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,504.80 : 90,380.76 = 38,265.40 : x
  2. Step 2: Convert to fraction form
    65,504.80/90,380.76 = 38,265.40/x
  3. Step 3: Cross multiply
    65,504.80x = 90,380.76 × 38,265.40
  4. Step 4: Simplify right side
    65,504.80x = 3,458,455,933.70
  5. Step 5: Solve for x
    x = 3,458,455,933.70/65,504.80
  6. Step 6: Final answer
    x = 52,796.98

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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.