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Finding the Fourth Proportional to 115,802.40, 173,660.40 and 45,667.20

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Solution

The fourth proportional to 115,802.40, 173,660.40 and 45,667.20 is: 68,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,802.40 : 173,660.40 = 45,667.20 : x
  2. Step 2: Convert to fraction form
    115,802.40/173,660.40 = 45,667.20/x
  3. Step 3: Cross multiply
    115,802.40x = 173,660.40 × 45,667.20
  4. Step 4: Simplify right side
    115,802.40x = 7,930,584,218.88
  5. Step 5: Solve for x
    x = 7,930,584,218.88/115,802.40
  6. Step 6: Final answer
    x = 68,483.76

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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.