Home / 54,990.84-75,886.70-31,116.90

Finding the Fourth Proportional to 54,990.84, 75,886.70 and 31,116.90

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Solution

The fourth proportional to 54,990.84, 75,886.70 and 31,116.90 is: 42,940.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,990.84 : 75,886.70 = 31,116.90 : x
  2. Step 2: Convert to fraction form
    54,990.84/75,886.70 = 31,116.90/x
  3. Step 3: Cross multiply
    54,990.84x = 75,886.70 × 31,116.90
  4. Step 4: Simplify right side
    54,990.84x = 2,361,358,699.65
  5. Step 5: Solve for x
    x = 2,361,358,699.65/54,990.84
  6. Step 6: Final answer
    x = 42,940.95

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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.