Home / 39,678.12-54,760.86-22,907.88

Finding the Fourth Proportional to 39,678.12, 54,760.86 and 22,907.88

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Solution

The fourth proportional to 39,678.12, 54,760.86 and 22,907.88 is: 31,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,678.12 : 54,760.86 = 22,907.88 : x
  2. Step 2: Convert to fraction form
    39,678.12/54,760.86 = 22,907.88/x
  3. Step 3: Cross multiply
    39,678.12x = 54,760.86 × 22,907.88
  4. Step 4: Simplify right side
    39,678.12x = 1,254,455,209.58
  5. Step 5: Solve for x
    x = 1,254,455,209.58/39,678.12
  6. Step 6: Final answer
    x = 31,615.79

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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.