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Finding the Fourth Proportional to 78,263.88, 117,395.82 and 36,710.88

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Solution

The fourth proportional to 78,263.88, 117,395.82 and 36,710.88 is: 55,066.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,263.88 : 117,395.82 = 36,710.88 : x
  2. Step 2: Convert to fraction form
    78,263.88/117,395.82 = 36,710.88/x
  3. Step 3: Cross multiply
    78,263.88x = 117,395.82 × 36,710.88
  4. Step 4: Simplify right side
    78,263.88x = 4,309,703,089.99
  5. Step 5: Solve for x
    x = 4,309,703,089.99/78,263.88
  6. Step 6: Final answer
    x = 55,066.31

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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.