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Finding the Fourth Proportional to 85,658.46, 128,413.86 and 33,104.82

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Solution

The fourth proportional to 85,658.46, 128,413.86 and 33,104.82 is: 49,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,658.46 : 128,413.86 = 33,104.82 : x
  2. Step 2: Convert to fraction form
    85,658.46/128,413.86 = 33,104.82/x
  3. Step 3: Cross multiply
    85,658.46x = 128,413.86 × 33,104.82
  4. Step 4: Simplify right side
    85,658.46x = 4,251,117,720.81
  5. Step 5: Solve for x
    x = 4,251,117,720.81/85,658.46
  6. Step 6: Final answer
    x = 49,628.70

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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.