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Finding the Fourth Proportional to 83,413.68, 115,100.36 and 66,460.88

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Solution

The fourth proportional to 83,413.68, 115,100.36 and 66,460.88 is: 91,707.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,413.68 : 115,100.36 = 66,460.88 : x
  2. Step 2: Convert to fraction form
    83,413.68/115,100.36 = 66,460.88/x
  3. Step 3: Cross multiply
    83,413.68x = 115,100.36 × 66,460.88
  4. Step 4: Simplify right side
    83,413.68x = 7,649,671,213.92
  5. Step 5: Solve for x
    x = 7,649,671,213.92/83,413.68
  6. Step 6: Final answer
    x = 91,707.63

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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.