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Finding the Fourth Proportional to 115,652, 159,599.76 and 62,660

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Solution

The fourth proportional to 115,652, 159,599.76 and 62,660 is: 86,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,652 : 159,599.76 = 62,660 : x
  2. Step 2: Convert to fraction form
    115,652/159,599.76 = 62,660/x
  3. Step 3: Cross multiply
    115,652x = 159,599.76 × 62,660
  4. Step 4: Simplify right side
    115,652x = 10,000,520,961.60
  5. Step 5: Solve for x
    x = 10,000,520,961.60/115,652
  6. Step 6: Final answer
    x = 86,470.80

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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.