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Finding the Fourth Proportional to 66,151.78, 91,239.16 and 45,767.76

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Solution

The fourth proportional to 66,151.78, 91,239.16 and 45,767.76 is: 63,124.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,151.78 : 91,239.16 = 45,767.76 : x
  2. Step 2: Convert to fraction form
    66,151.78/91,239.16 = 45,767.76/x
  3. Step 3: Cross multiply
    66,151.78x = 91,239.16 × 45,767.76
  4. Step 4: Simplify right side
    66,151.78x = 4,175,811,977.48
  5. Step 5: Solve for x
    x = 4,175,811,977.48/66,151.78
  6. Step 6: Final answer
    x = 63,124.71

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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.