Home / 55,078.14-76,008.08-31,209.47

Finding the Fourth Proportional to 55,078.14, 76,008.08 and 31,209.47

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Solution

The fourth proportional to 55,078.14, 76,008.08 and 31,209.47 is: 43,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,078.14 : 76,008.08 = 31,209.47 : x
  2. Step 2: Convert to fraction form
    55,078.14/76,008.08 = 31,209.47/x
  3. Step 3: Cross multiply
    55,078.14x = 76,008.08 × 31,209.47
  4. Step 4: Simplify right side
    55,078.14x = 2,372,171,590.50
  5. Step 5: Solve for x
    x = 2,372,171,590.50/55,078.14
  6. Step 6: Final answer
    x = 43,069.20

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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.