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Finding the Fourth Proportional to 66,471.74, 99,318.35 and 64,146.23

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Solution

The fourth proportional to 66,471.74, 99,318.35 and 64,146.23 is: 95,843.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,471.74 : 99,318.35 = 64,146.23 : x
  2. Step 2: Convert to fraction form
    66,471.74/99,318.35 = 64,146.23/x
  3. Step 3: Cross multiply
    66,471.74x = 99,318.35 × 64,146.23
  4. Step 4: Simplify right side
    66,471.74x = 6,370,897,758.54
  5. Step 5: Solve for x
    x = 6,370,897,758.54/66,471.74
  6. Step 6: Final answer
    x = 95,843.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.