Home / 55,728.40-76,905.19-31,855.59

Finding the Fourth Proportional to 55,728.40, 76,905.19 and 31,855.59

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Solution

The fourth proportional to 55,728.40, 76,905.19 and 31,855.59 is: 43,960.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,728.40 : 76,905.19 = 31,855.59 : x
  2. Step 2: Convert to fraction form
    55,728.40/76,905.19 = 31,855.59/x
  3. Step 3: Cross multiply
    55,728.40x = 76,905.19 × 31,855.59
  4. Step 4: Simplify right side
    55,728.40x = 2,449,860,201.51
  5. Step 5: Solve for x
    x = 2,449,860,201.51/55,728.40
  6. Step 6: Final answer
    x = 43,960.72

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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.