Home / 81,043.19-121,607.61-57,502.87

Finding the Fourth Proportional to 81,043.19, 121,607.61 and 57,502.87

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Solution

The fourth proportional to 81,043.19, 121,607.61 and 57,502.87 is: 86,284.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,043.19 : 121,607.61 = 57,502.87 : x
  2. Step 2: Convert to fraction form
    81,043.19/121,607.61 = 57,502.87/x
  3. Step 3: Cross multiply
    81,043.19x = 121,607.61 × 57,502.87
  4. Step 4: Simplify right side
    81,043.19x = 6,992,786,588.84
  5. Step 5: Solve for x
    x = 6,992,786,588.84/81,043.19
  6. Step 6: Final answer
    x = 86,284.69

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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.