Home / 81,299.01-121,846.85-39,171.18

Finding the Fourth Proportional to 81,299.01, 121,846.85 and 39,171.18

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Solution

The fourth proportional to 81,299.01, 121,846.85 and 39,171.18 is: 58,707.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,299.01 : 121,846.85 = 39,171.18 : x
  2. Step 2: Convert to fraction form
    81,299.01/121,846.85 = 39,171.18/x
  3. Step 3: Cross multiply
    81,299.01x = 121,846.85 × 39,171.18
  4. Step 4: Simplify right side
    81,299.01x = 4,772,884,991.71
  5. Step 5: Solve for x
    x = 4,772,884,991.71/81,299.01
  6. Step 6: Final answer
    x = 58,707.79

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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.