Home / 40,135.77-55,405.62-28,659.29

Finding the Fourth Proportional to 40,135.77, 55,405.62 and 28,659.29

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Solution

The fourth proportional to 40,135.77, 55,405.62 and 28,659.29 is: 39,562.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,135.77 : 55,405.62 = 28,659.29 : x
  2. Step 2: Convert to fraction form
    40,135.77/55,405.62 = 28,659.29/x
  3. Step 3: Cross multiply
    40,135.77x = 55,405.62 × 28,659.29
  4. Step 4: Simplify right side
    40,135.77x = 1,587,885,454.18
  5. Step 5: Solve for x
    x = 1,587,885,454.18/40,135.77
  6. Step 6: Final answer
    x = 39,562.85

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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.