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Finding the Fourth Proportional to 101,861.93, 140,562.81 and 56,537.75

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Solution

The fourth proportional to 101,861.93, 140,562.81 and 56,537.75 is: 78,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,861.93 : 140,562.81 = 56,537.75 : x
  2. Step 2: Convert to fraction form
    101,861.93/140,562.81 = 56,537.75/x
  3. Step 3: Cross multiply
    101,861.93x = 140,562.81 × 56,537.75
  4. Step 4: Simplify right side
    101,861.93x = 7,947,104,308.26
  5. Step 5: Solve for x
    x = 7,947,104,308.26/101,861.93
  6. Step 6: Final answer
    x = 78,018.40

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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.