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Finding the Fourth Proportional to 66,232.53, 91,434.72 and 51,091.20

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Solution

The fourth proportional to 66,232.53, 91,434.72 and 51,091.20 is: 70,531.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,232.53 : 91,434.72 = 51,091.20 : x
  2. Step 2: Convert to fraction form
    66,232.53/91,434.72 = 51,091.20/x
  3. Step 3: Cross multiply
    66,232.53x = 91,434.72 × 51,091.20
  4. Step 4: Simplify right side
    66,232.53x = 4,671,509,566.46
  5. Step 5: Solve for x
    x = 4,671,509,566.46/66,232.53
  6. Step 6: Final answer
    x = 70,531.95

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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.