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Finding the Fourth Proportional to 140,760.72, 211,142.48 and 35,579.72

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Solution

The fourth proportional to 140,760.72, 211,142.48 and 35,579.72 is: 53,369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,760.72 : 211,142.48 = 35,579.72 : x
  2. Step 2: Convert to fraction form
    140,760.72/211,142.48 = 35,579.72/x
  3. Step 3: Cross multiply
    140,760.72x = 211,142.48 × 35,579.72
  4. Step 4: Simplify right side
    140,760.72x = 7,512,390,318.51
  5. Step 5: Solve for x
    x = 7,512,390,318.51/140,760.72
  6. Step 6: Final answer
    x = 53,369.93

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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.