Home / 55,039.05-75,934.31-31,160.61

Finding the Fourth Proportional to 55,039.05, 75,934.31 and 31,160.61

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Solution

The fourth proportional to 55,039.05, 75,934.31 and 31,160.61 is: 42,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,039.05 : 75,934.31 = 31,160.61 : x
  2. Step 2: Convert to fraction form
    55,039.05/75,934.31 = 31,160.61/x
  3. Step 3: Cross multiply
    55,039.05x = 75,934.31 × 31,160.61
  4. Step 4: Simplify right side
    55,039.05x = 2,366,159,263.73
  5. Step 5: Solve for x
    x = 2,366,159,263.73/55,039.05
  6. Step 6: Final answer
    x = 42,990.55

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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.