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Finding the Fourth Proportional to 64,756.75, 89,374.25 and 39,267.27

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Solution

The fourth proportional to 64,756.75, 89,374.25 and 39,267.27 is: 54,194.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,756.75 : 89,374.25 = 39,267.27 : x
  2. Step 2: Convert to fraction form
    64,756.75/89,374.25 = 39,267.27/x
  3. Step 3: Cross multiply
    64,756.75x = 89,374.25 × 39,267.27
  4. Step 4: Simplify right side
    64,756.75x = 3,509,482,805.80
  5. Step 5: Solve for x
    x = 3,509,482,805.80/64,756.75
  6. Step 6: Final answer
    x = 54,194.86

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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.