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Finding the Fourth Proportional to 101,131.56, 139,509.42 and 62,876.60

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Solution

The fourth proportional to 101,131.56, 139,509.42 and 62,876.60 is: 86,737.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,131.56 : 139,509.42 = 62,876.60 : x
  2. Step 2: Convert to fraction form
    101,131.56/139,509.42 = 62,876.60/x
  3. Step 3: Cross multiply
    101,131.56x = 139,509.42 × 62,876.60
  4. Step 4: Simplify right side
    101,131.56x = 8,771,877,997.57
  5. Step 5: Solve for x
    x = 8,771,877,997.57/101,131.56
  6. Step 6: Final answer
    x = 86,737.30

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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.