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Finding the Fourth Proportional to 77,305.98, 115,960.05 and 21,901.98

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Solution

The fourth proportional to 77,305.98, 115,960.05 and 21,901.98 is: 32,853.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,305.98 : 115,960.05 = 21,901.98 : x
  2. Step 2: Convert to fraction form
    77,305.98/115,960.05 = 21,901.98/x
  3. Step 3: Cross multiply
    77,305.98x = 115,960.05 × 21,901.98
  4. Step 4: Simplify right side
    77,305.98x = 2,539,754,695.90
  5. Step 5: Solve for x
    x = 2,539,754,695.90/77,305.98
  6. Step 6: Final answer
    x = 32,853.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.