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Finding the Fourth Proportional to 65,995.20, 98,863.20 and 61,329.60

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Solution

The fourth proportional to 65,995.20, 98,863.20 and 61,329.60 is: 91,873.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,995.20 : 98,863.20 = 61,329.60 : x
  2. Step 2: Convert to fraction form
    65,995.20/98,863.20 = 61,329.60/x
  3. Step 3: Cross multiply
    65,995.20x = 98,863.20 × 61,329.60
  4. Step 4: Simplify right side
    65,995.20x = 6,063,240,510.72
  5. Step 5: Solve for x
    x = 6,063,240,510.72/65,995.20
  6. Step 6: Final answer
    x = 91,873.96

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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.