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Finding the Fourth Proportional to 101,367.15, 139,881.01 and 56,042.49

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Solution

The fourth proportional to 101,367.15, 139,881.01 and 56,042.49 is: 77,335.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,367.15 : 139,881.01 = 56,042.49 : x
  2. Step 2: Convert to fraction form
    101,367.15/139,881.01 = 56,042.49/x
  3. Step 3: Cross multiply
    101,367.15x = 139,881.01 × 56,042.49
  4. Step 4: Simplify right side
    101,367.15x = 7,839,280,104.11
  5. Step 5: Solve for x
    x = 7,839,280,104.11/101,367.15
  6. Step 6: Final answer
    x = 77,335.51

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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.