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Finding the Fourth Proportional to 101,379.63, 139,891.68 and 56,051.49

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Solution

The fourth proportional to 101,379.63, 139,891.68 and 56,051.49 is: 77,344.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,379.63 : 139,891.68 = 56,051.49 : x
  2. Step 2: Convert to fraction form
    101,379.63/139,891.68 = 56,051.49/x
  3. Step 3: Cross multiply
    101,379.63x = 139,891.68 × 56,051.49
  4. Step 4: Simplify right side
    101,379.63x = 7,841,137,102.60
  5. Step 5: Solve for x
    x = 7,841,137,102.60/101,379.63
  6. Step 6: Final answer
    x = 77,344.31

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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.