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Finding the Fourth Proportional to 78,866, 118,240.68 and 47,694.32

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Solution

The fourth proportional to 78,866, 118,240.68 and 47,694.32 is: 71,506.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,866 : 118,240.68 = 47,694.32 : x
  2. Step 2: Convert to fraction form
    78,866/118,240.68 = 47,694.32/x
  3. Step 3: Cross multiply
    78,866x = 118,240.68 × 47,694.32
  4. Step 4: Simplify right side
    78,866x = 5,639,408,828.94
  5. Step 5: Solve for x
    x = 5,639,408,828.94/78,866
  6. Step 6: Final answer
    x = 71,506.21

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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.