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Finding the Fourth Proportional to 66,198.84, 91,423.02 and 60,512.76

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Solution

The fourth proportional to 66,198.84, 91,423.02 and 60,512.76 is: 83,570.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,198.84 : 91,423.02 = 60,512.76 : x
  2. Step 2: Convert to fraction form
    66,198.84/91,423.02 = 60,512.76/x
  3. Step 3: Cross multiply
    66,198.84x = 91,423.02 × 60,512.76
  4. Step 4: Simplify right side
    66,198.84x = 5,532,259,267.74
  5. Step 5: Solve for x
    x = 5,532,259,267.74/66,198.84
  6. Step 6: Final answer
    x = 83,570.34

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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.