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Finding the Fourth Proportional to 71,655.60, 98,879.22 and 39,822.60

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Solution

The fourth proportional to 71,655.60, 98,879.22 and 39,822.60 is: 54,952.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,655.60 : 98,879.22 = 39,822.60 : x
  2. Step 2: Convert to fraction form
    71,655.60/98,879.22 = 39,822.60/x
  3. Step 3: Cross multiply
    71,655.60x = 98,879.22 × 39,822.60
  4. Step 4: Simplify right side
    71,655.60x = 3,937,627,626.37
  5. Step 5: Solve for x
    x = 3,937,627,626.37/71,655.60
  6. Step 6: Final answer
    x = 54,952.13

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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.