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Finding the Fourth Proportional to 78,239.66, 107,968.83 and 44,703.50

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Solution

The fourth proportional to 78,239.66, 107,968.83 and 44,703.50 is: 61,689.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,239.66 : 107,968.83 = 44,703.50 : x
  2. Step 2: Convert to fraction form
    78,239.66/107,968.83 = 44,703.50/x
  3. Step 3: Cross multiply
    78,239.66x = 107,968.83 × 44,703.50
  4. Step 4: Simplify right side
    78,239.66x = 4,826,584,591.91
  5. Step 5: Solve for x
    x = 4,826,584,591.91/78,239.66
  6. Step 6: Final answer
    x = 61,689.74

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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.