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Finding the Fourth Proportional to 115,225.79, 172,838.48 and 45,055.89

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Solution

The fourth proportional to 115,225.79, 172,838.48 and 45,055.89 is: 67,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,225.79 : 172,838.48 = 45,055.89 : x
  2. Step 2: Convert to fraction form
    115,225.79/172,838.48 = 45,055.89/x
  3. Step 3: Cross multiply
    115,225.79x = 172,838.48 × 45,055.89
  4. Step 4: Simplify right side
    115,225.79x = 7,787,391,317.37
  5. Step 5: Solve for x
    x = 7,787,391,317.37/115,225.79
  6. Step 6: Final answer
    x = 67,583.76

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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.