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Finding the Fourth Proportional to 66,149.76, 98,995.82 and 40,838.88

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Solution

The fourth proportional to 66,149.76, 98,995.82 and 40,838.88 is: 61,117.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,149.76 : 98,995.82 = 40,838.88 : x
  2. Step 2: Convert to fraction form
    66,149.76/98,995.82 = 40,838.88/x
  3. Step 3: Cross multiply
    66,149.76x = 98,995.82 × 40,838.88
  4. Step 4: Simplify right side
    66,149.76x = 4,042,878,413.48
  5. Step 5: Solve for x
    x = 4,042,878,413.48/66,149.76
  6. Step 6: Final answer
    x = 61,117.05

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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.