Home / 55,021.29-75,928.77-31,147.76

Finding the Fourth Proportional to 55,021.29, 75,928.77 and 31,147.76

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Solution

The fourth proportional to 55,021.29, 75,928.77 and 31,147.76 is: 42,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,021.29 : 75,928.77 = 31,147.76 : x
  2. Step 2: Convert to fraction form
    55,021.29/75,928.77 = 31,147.76/x
  3. Step 3: Cross multiply
    55,021.29x = 75,928.77 × 31,147.76
  4. Step 4: Simplify right side
    55,021.29x = 2,365,011,105.06
  5. Step 5: Solve for x
    x = 2,365,011,105.06/55,021.29
  6. Step 6: Final answer
    x = 42,983.56

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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.