Home / 54,801.04-75,628.84-30,919

Finding the Fourth Proportional to 54,801.04, 75,628.84 and 30,919

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Solution

The fourth proportional to 54,801.04, 75,628.84 and 30,919 is: 42,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,801.04 : 75,628.84 = 30,919 : x
  2. Step 2: Convert to fraction form
    54,801.04/75,628.84 = 30,919/x
  3. Step 3: Cross multiply
    54,801.04x = 75,628.84 × 30,919
  4. Step 4: Simplify right side
    54,801.04x = 2,338,368,103.96
  5. Step 5: Solve for x
    x = 2,338,368,103.96/54,801.04
  6. Step 6: Final answer
    x = 42,670.14

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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.