Home / 55,019.29-75,928.44-31,145.47

Finding the Fourth Proportional to 55,019.29, 75,928.44 and 31,145.47

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Solution

The fourth proportional to 55,019.29, 75,928.44 and 31,145.47 is: 42,981.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,019.29 : 75,928.44 = 31,145.47 : x
  2. Step 2: Convert to fraction form
    55,019.29/75,928.44 = 31,145.47/x
  3. Step 3: Cross multiply
    55,019.29x = 75,928.44 × 31,145.47
  4. Step 4: Simplify right side
    55,019.29x = 2,364,826,950.17
  5. Step 5: Solve for x
    x = 2,364,826,950.17/55,019.29
  6. Step 6: Final answer
    x = 42,981.78

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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.