Home / 92,788.47-138,867.21-57,272.20

Finding the Fourth Proportional to 92,788.47, 138,867.21 and 57,272.20

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Solution

The fourth proportional to 92,788.47, 138,867.21 and 57,272.20 is: 85,713.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,788.47 : 138,867.21 = 57,272.20 : x
  2. Step 2: Convert to fraction form
    92,788.47/138,867.21 = 57,272.20/x
  3. Step 3: Cross multiply
    92,788.47x = 138,867.21 × 57,272.20
  4. Step 4: Simplify right side
    92,788.47x = 7,953,230,277.39
  5. Step 5: Solve for x
    x = 7,953,230,277.39/92,788.47
  6. Step 6: Final answer
    x = 85,713.56

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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.