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Finding the Fourth Proportional to 66,152.78, 91,240.54 and 45,768.76

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Solution

The fourth proportional to 66,152.78, 91,240.54 and 45,768.76 is: 63,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,152.78 : 91,240.54 = 45,768.76 : x
  2. Step 2: Convert to fraction form
    66,152.78/91,240.54 = 45,768.76/x
  3. Step 3: Cross multiply
    66,152.78x = 91,240.54 × 45,768.76
  4. Step 4: Simplify right side
    66,152.78x = 4,175,966,377.53
  5. Step 5: Solve for x
    x = 4,175,966,377.53/66,152.78
  6. Step 6: Final answer
    x = 63,126.09

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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.