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Finding the Fourth Proportional to 66,991.46, 100,339.56 and 37,335.74

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Solution

The fourth proportional to 66,991.46, 100,339.56 and 37,335.74 is: 55,921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.46 : 100,339.56 = 37,335.74 : x
  2. Step 2: Convert to fraction form
    66,991.46/100,339.56 = 37,335.74/x
  3. Step 3: Cross multiply
    66,991.46x = 100,339.56 × 37,335.74
  4. Step 4: Simplify right side
    66,991.46x = 3,746,251,222.18
  5. Step 5: Solve for x
    x = 3,746,251,222.18/66,991.46
  6. Step 6: Final answer
    x = 55,921.33

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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.