Home / 55,815.05-77,023.43-31,940.20

Finding the Fourth Proportional to 55,815.05, 77,023.43 and 31,940.20

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Solution

The fourth proportional to 55,815.05, 77,023.43 and 31,940.20 is: 44,076.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,815.05 : 77,023.43 = 31,940.20 : x
  2. Step 2: Convert to fraction form
    55,815.05/77,023.43 = 31,940.20/x
  3. Step 3: Cross multiply
    55,815.05x = 77,023.43 × 31,940.20
  4. Step 4: Simplify right side
    55,815.05x = 2,460,143,758.89
  5. Step 5: Solve for x
    x = 2,460,143,758.89/55,815.05
  6. Step 6: Final answer
    x = 44,076.71

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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.