Home / 40,781.31-56,218.64-28,823.55

Finding the Fourth Proportional to 40,781.31, 56,218.64 and 28,823.55

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Solution

The fourth proportional to 40,781.31, 56,218.64 and 28,823.55 is: 39,734.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,781.31 : 56,218.64 = 28,823.55 : x
  2. Step 2: Convert to fraction form
    40,781.31/56,218.64 = 28,823.55/x
  3. Step 3: Cross multiply
    40,781.31x = 56,218.64 × 28,823.55
  4. Step 4: Simplify right side
    40,781.31x = 1,620,420,636.85
  5. Step 5: Solve for x
    x = 1,620,420,636.85/40,781.31
  6. Step 6: Final answer
    x = 39,734.39

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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.