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Finding the Fourth Proportional to 101,379.38, 139,891.32 and 56,051.24

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Solution

The fourth proportional to 101,379.38, 139,891.32 and 56,051.24 is: 77,343.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,379.38 : 139,891.32 = 56,051.24 : x
  2. Step 2: Convert to fraction form
    101,379.38/139,891.32 = 56,051.24/x
  3. Step 3: Cross multiply
    101,379.38x = 139,891.32 × 56,051.24
  4. Step 4: Simplify right side
    101,379.38x = 7,841,081,951.24
  5. Step 5: Solve for x
    x = 7,841,081,951.24/101,379.38
  6. Step 6: Final answer
    x = 77,343.95

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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.