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Finding the Fourth Proportional to 101,134.50, 139,565.50 and 55,812.48

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Solution

The fourth proportional to 101,134.50, 139,565.50 and 55,812.48 is: 77,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,134.50 : 139,565.50 = 55,812.48 : x
  2. Step 2: Convert to fraction form
    101,134.50/139,565.50 = 55,812.48/x
  3. Step 3: Cross multiply
    101,134.50x = 139,565.50 × 55,812.48
  4. Step 4: Simplify right side
    101,134.50x = 7,789,496,677.44
  5. Step 5: Solve for x
    x = 7,789,496,677.44/101,134.50
  6. Step 6: Final answer
    x = 77,021.16

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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.