Home / 75,670.89-113,326.52-38,112.81

Finding the Fourth Proportional to 75,670.89, 113,326.52 and 38,112.81

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Solution

The fourth proportional to 75,670.89, 113,326.52 and 38,112.81 is: 57,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,670.89 : 113,326.52 = 38,112.81 : x
  2. Step 2: Convert to fraction form
    75,670.89/113,326.52 = 38,112.81/x
  3. Step 3: Cross multiply
    75,670.89x = 113,326.52 × 38,112.81
  4. Step 4: Simplify right side
    75,670.89x = 4,319,191,934.16
  5. Step 5: Solve for x
    x = 4,319,191,934.16/75,670.89
  6. Step 6: Final answer
    x = 57,078.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.