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Finding the Fourth Proportional to 71,734.60, 98,991.48 and 39,903.22

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Solution

The fourth proportional to 71,734.60, 98,991.48 and 39,903.22 is: 55,065.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,734.60 : 98,991.48 = 39,903.22 : x
  2. Step 2: Convert to fraction form
    71,734.60/98,991.48 = 39,903.22/x
  3. Step 3: Cross multiply
    71,734.60x = 98,991.48 × 39,903.22
  4. Step 4: Simplify right side
    71,734.60x = 3,950,078,804.57
  5. Step 5: Solve for x
    x = 3,950,078,804.57/71,734.60
  6. Step 6: Final answer
    x = 55,065.18

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1.5x scale

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.