Home / 115,712.29-173,667.05-45,640.81

Finding the Fourth Proportional to 115,712.29, 173,667.05 and 45,640.81

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Solution

The fourth proportional to 115,712.29, 173,667.05 and 45,640.81 is: 68,500.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,712.29 : 173,667.05 = 45,640.81 : x
  2. Step 2: Convert to fraction form
    115,712.29/173,667.05 = 45,640.81/x
  3. Step 3: Cross multiply
    115,712.29x = 173,667.05 × 45,640.81
  4. Step 4: Simplify right side
    115,712.29x = 7,926,303,735.77
  5. Step 5: Solve for x
    x = 7,926,303,735.77/115,712.29
  6. Step 6: Final answer
    x = 68,500.11

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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.