Home / 81,398.22-122,284.47-57,437.66

Finding the Fourth Proportional to 81,398.22, 122,284.47 and 57,437.66

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Solution

The fourth proportional to 81,398.22, 122,284.47 and 57,437.66 is: 86,288.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.22 : 122,284.47 = 57,437.66 : x
  2. Step 2: Convert to fraction form
    81,398.22/122,284.47 = 57,437.66/x
  3. Step 3: Cross multiply
    81,398.22x = 122,284.47 × 57,437.66
  4. Step 4: Simplify right side
    81,398.22x = 7,023,733,811.14
  5. Step 5: Solve for x
    x = 7,023,733,811.14/81,398.22
  6. Step 6: Final answer
    x = 86,288.54

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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.