Home / 55,078.39-76,008.43-31,209.72

Finding the Fourth Proportional to 55,078.39, 76,008.43 and 31,209.72

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Solution

The fourth proportional to 55,078.39, 76,008.43 and 31,209.72 is: 43,069.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,078.39 : 76,008.43 = 31,209.72 : x
  2. Step 2: Convert to fraction form
    55,078.39/76,008.43 = 31,209.72/x
  3. Step 3: Cross multiply
    55,078.39x = 76,008.43 × 31,209.72
  4. Step 4: Simplify right side
    55,078.39x = 2,372,201,281.85
  5. Step 5: Solve for x
    x = 2,372,201,281.85/55,078.39
  6. Step 6: Final answer
    x = 43,069.55

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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.