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Finding the Fourth Proportional to 101,134.49, 139,565.48 and 55,812.47

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Solution

The fourth proportional to 101,134.49, 139,565.48 and 55,812.47 is: 77,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,134.49 : 139,565.48 = 55,812.47 : x
  2. Step 2: Convert to fraction form
    101,134.49/139,565.48 = 55,812.47/x
  3. Step 3: Cross multiply
    101,134.49x = 139,565.48 × 55,812.47
  4. Step 4: Simplify right side
    101,134.49x = 7,789,493,188.65
  5. Step 5: Solve for x
    x = 7,789,493,188.65/101,134.49
  6. Step 6: Final answer
    x = 77,021.14

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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.