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Finding the Fourth Proportional to 70,461.63, 96,641.69 and 66,648.96

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Solution

The fourth proportional to 70,461.63, 96,641.69 and 66,648.96 is: 91,412.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,461.63 : 96,641.69 = 66,648.96 : x
  2. Step 2: Convert to fraction form
    70,461.63/96,641.69 = 66,648.96/x
  3. Step 3: Cross multiply
    70,461.63x = 96,641.69 × 66,648.96
  4. Step 4: Simplify right side
    70,461.63x = 6,441,067,797.90
  5. Step 5: Solve for x
    x = 6,441,067,797.90/70,461.63
  6. Step 6: Final answer
    x = 91,412.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.