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Finding the Fourth Proportional to 65,265.60, 90,055.08 and 38,413.56

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Solution

The fourth proportional to 65,265.60, 90,055.08 and 38,413.56 is: 53,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,265.60 : 90,055.08 = 38,413.56 : x
  2. Step 2: Convert to fraction form
    65,265.60/90,055.08 = 38,413.56/x
  3. Step 3: Cross multiply
    65,265.60x = 90,055.08 × 38,413.56
  4. Step 4: Simplify right side
    65,265.60x = 3,459,336,218.88
  5. Step 5: Solve for x
    x = 3,459,336,218.88/65,265.60
  6. Step 6: Final answer
    x = 53,003.97

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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.