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Finding the Fourth Proportional to 101,372.76, 139,891.93 and 56,049.58

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Solution

The fourth proportional to 101,372.76, 139,891.93 and 56,049.58 is: 77,347.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,372.76 : 139,891.93 = 56,049.58 : x
  2. Step 2: Convert to fraction form
    101,372.76/139,891.93 = 56,049.58/x
  3. Step 3: Cross multiply
    101,372.76x = 139,891.93 × 56,049.58
  4. Step 4: Simplify right side
    101,372.76x = 7,840,883,169.74
  5. Step 5: Solve for x
    x = 7,840,883,169.74/101,372.76
  6. Step 6: Final answer
    x = 77,347.04

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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.