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Finding the Fourth Proportional to 101,866.56, 140,569.32 and 56,544.60

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Solution

The fourth proportional to 101,866.56, 140,569.32 and 56,544.60 is: 78,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,866.56 : 140,569.32 = 56,544.60 : x
  2. Step 2: Convert to fraction form
    101,866.56/140,569.32 = 56,544.60/x
  3. Step 3: Cross multiply
    101,866.56x = 140,569.32 × 56,544.60
  4. Step 4: Simplify right side
    101,866.56x = 7,948,435,971.67
  5. Step 5: Solve for x
    x = 7,948,435,971.67/101,866.56
  6. Step 6: Final answer
    x = 78,027.92

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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.