Home / 40,385.56-55,712.94-28,455.48

Finding the Fourth Proportional to 40,385.56, 55,712.94 and 28,455.48

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Solution

The fourth proportional to 40,385.56, 55,712.94 and 28,455.48 is: 39,255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,385.56 : 55,712.94 = 28,455.48 : x
  2. Step 2: Convert to fraction form
    40,385.56/55,712.94 = 28,455.48/x
  3. Step 3: Cross multiply
    40,385.56x = 55,712.94 × 28,455.48
  4. Step 4: Simplify right side
    40,385.56x = 1,585,338,449.91
  5. Step 5: Solve for x
    x = 1,585,338,449.91/40,385.56
  6. Step 6: Final answer
    x = 39,255.08

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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.