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Finding the Fourth Proportional to 101,619.95, 140,227.29 and 56,299.85

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Solution

The fourth proportional to 101,619.95, 140,227.29 and 56,299.85 is: 77,689.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,619.95 : 140,227.29 = 56,299.85 : x
  2. Step 2: Convert to fraction form
    101,619.95/140,227.29 = 56,299.85/x
  3. Step 3: Cross multiply
    101,619.95x = 140,227.29 × 56,299.85
  4. Step 4: Simplify right side
    101,619.95x = 7,894,775,392.91
  5. Step 5: Solve for x
    x = 7,894,775,392.91/101,619.95
  6. Step 6: Final answer
    x = 77,689.23

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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.