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Finding the Fourth Proportional to 65,074.64, 89,801.88 and 39,571.76

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Solution

The fourth proportional to 65,074.64, 89,801.88 and 39,571.76 is: 54,608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,074.64 : 89,801.88 = 39,571.76 : x
  2. Step 2: Convert to fraction form
    65,074.64/89,801.88 = 39,571.76/x
  3. Step 3: Cross multiply
    65,074.64x = 89,801.88 × 39,571.76
  4. Step 4: Simplify right side
    65,074.64x = 3,553,618,442.91
  5. Step 5: Solve for x
    x = 3,553,618,442.91/65,074.64
  6. Step 6: Final answer
    x = 54,608.35

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1.5x scale

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.