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Finding the Fourth Proportional to 40,629.90, 60,826.05 and 28,965.90

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Solution

The fourth proportional to 40,629.90, 60,826.05 and 28,965.90 is: 43,364.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,629.90 : 60,826.05 = 28,965.90 : x
  2. Step 2: Convert to fraction form
    40,629.90/60,826.05 = 28,965.90/x
  3. Step 3: Cross multiply
    40,629.90x = 60,826.05 × 28,965.90
  4. Step 4: Simplify right side
    40,629.90x = 1,761,881,281.70
  5. Step 5: Solve for x
    x = 1,761,881,281.70/40,629.90
  6. Step 6: Final answer
    x = 43,364.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.