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Finding the Fourth Proportional to 66,902.52, 100,960.80 and 64,671.72

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Solution

The fourth proportional to 66,902.52, 100,960.80 and 64,671.72 is: 97,594.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,902.52 : 100,960.80 = 64,671.72 : x
  2. Step 2: Convert to fraction form
    66,902.52/100,960.80 = 64,671.72/x
  3. Step 3: Cross multiply
    66,902.52x = 100,960.80 × 64,671.72
  4. Step 4: Simplify right side
    66,902.52x = 6,529,308,588.58
  5. Step 5: Solve for x
    x = 6,529,308,588.58/66,902.52
  6. Step 6: Final answer
    x = 97,594.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.