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Finding the Fourth Proportional to 64,921.50, 89,594 and 37,695.55

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Solution

The fourth proportional to 64,921.50, 89,594 and 37,695.55 is: 52,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,921.50 : 89,594 = 37,695.55 : x
  2. Step 2: Convert to fraction form
    64,921.50/89,594 = 37,695.55/x
  3. Step 3: Cross multiply
    64,921.50x = 89,594 × 37,695.55
  4. Step 4: Simplify right side
    64,921.50x = 3,377,295,106.70
  5. Step 5: Solve for x
    x = 3,377,295,106.70/64,921.50
  6. Step 6: Final answer
    x = 52,021.21

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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.