Home / 40,165.92-55,394.15-28,909.49

Finding the Fourth Proportional to 40,165.92, 55,394.15 and 28,909.49

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Solution

The fourth proportional to 40,165.92, 55,394.15 and 28,909.49 is: 39,870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,165.92 : 55,394.15 = 28,909.49 : x
  2. Step 2: Convert to fraction form
    40,165.92/55,394.15 = 28,909.49/x
  3. Step 3: Cross multiply
    40,165.92x = 55,394.15 × 28,909.49
  4. Step 4: Simplify right side
    40,165.92x = 1,601,416,203.97
  5. Step 5: Solve for x
    x = 1,601,416,203.97/40,165.92
  6. Step 6: Final answer
    x = 39,870.02

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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.