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Finding the Fourth Proportional to 101,068.38, 139,471.14 and 55,748.34

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Solution

The fourth proportional to 101,068.38, 139,471.14 and 55,748.34 is: 76,930.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,068.38 : 139,471.14 = 55,748.34 : x
  2. Step 2: Convert to fraction form
    101,068.38/139,471.14 = 55,748.34/x
  3. Step 3: Cross multiply
    101,068.38x = 139,471.14 × 55,748.34
  4. Step 4: Simplify right side
    101,068.38x = 7,775,284,532.91
  5. Step 5: Solve for x
    x = 7,775,284,532.91/101,068.38
  6. Step 6: Final answer
    x = 76,930.93

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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.