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Finding the Fourth Proportional to 101,695.77, 140,330.82 and 56,371.58

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Solution

The fourth proportional to 101,695.77, 140,330.82 and 56,371.58 is: 77,787.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,695.77 : 140,330.82 = 56,371.58 : x
  2. Step 2: Convert to fraction form
    101,695.77/140,330.82 = 56,371.58/x
  3. Step 3: Cross multiply
    101,695.77x = 140,330.82 × 56,371.58
  4. Step 4: Simplify right side
    101,695.77x = 7,910,669,344.44
  5. Step 5: Solve for x
    x = 7,910,669,344.44/101,695.77
  6. Step 6: Final answer
    x = 77,787.59

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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.