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Finding the Fourth Proportional to 70,447.52, 96,638.67 and 66,634.25

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Solution

The fourth proportional to 70,447.52, 96,638.67 and 66,634.25 is: 91,407.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,447.52 : 96,638.67 = 66,634.25 : x
  2. Step 2: Convert to fraction form
    70,447.52/96,638.67 = 66,634.25/x
  3. Step 3: Cross multiply
    70,447.52x = 96,638.67 × 66,634.25
  4. Step 4: Simplify right side
    70,447.52x = 6,439,444,813.25
  5. Step 5: Solve for x
    x = 6,439,444,813.25/70,447.52
  6. Step 6: Final answer
    x = 91,407.68

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1.5x scale

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.