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Finding the Fourth Proportional to 66,049.76, 99,211.68 and 53,413.76

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Solution

The fourth proportional to 66,049.76, 99,211.68 and 53,413.76 is: 80,231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,049.76 : 99,211.68 = 53,413.76 : x
  2. Step 2: Convert to fraction form
    66,049.76/99,211.68 = 53,413.76/x
  3. Step 3: Cross multiply
    66,049.76x = 99,211.68 × 53,413.76
  4. Step 4: Simplify right side
    66,049.76x = 5,299,268,864.72
  5. Step 5: Solve for x
    x = 5,299,268,864.72/66,049.76
  6. Step 6: Final answer
    x = 80,231.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.