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Finding the Fourth Proportional to 67,657.69, 101,413.64 and 28,189.63

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Solution

The fourth proportional to 67,657.69, 101,413.64 and 28,189.63 is: 42,254.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,657.69 : 101,413.64 = 28,189.63 : x
  2. Step 2: Convert to fraction form
    67,657.69/101,413.64 = 28,189.63/x
  3. Step 3: Cross multiply
    67,657.69x = 101,413.64 × 28,189.63
  4. Step 4: Simplify right side
    67,657.69x = 2,858,812,847.61
  5. Step 5: Solve for x
    x = 2,858,812,847.61/67,657.69
  6. Step 6: Final answer
    x = 42,254.07

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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.