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Finding the Fourth Proportional to 101,741.78, 140,374.40 and 58,717.82

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Solution

The fourth proportional to 101,741.78, 140,374.40 and 58,717.82 is: 81,013.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,741.78 : 140,374.40 = 58,717.82 : x
  2. Step 2: Convert to fraction form
    101,741.78/140,374.40 = 58,717.82/x
  3. Step 3: Cross multiply
    101,741.78x = 140,374.40 × 58,717.82
  4. Step 4: Simplify right side
    101,741.78x = 8,242,478,751.81
  5. Step 5: Solve for x
    x = 8,242,478,751.81/101,741.78
  6. Step 6: Final answer
    x = 81,013.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.