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Finding the Fourth Proportional to 64,987.40, 97,481.10 and 39,727.55

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Solution

The fourth proportional to 64,987.40, 97,481.10 and 39,727.55 is: 59,591.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.40 : 97,481.10 = 39,727.55 : x
  2. Step 2: Convert to fraction form
    64,987.40/97,481.10 = 39,727.55/x
  3. Step 3: Cross multiply
    64,987.40x = 97,481.10 × 39,727.55
  4. Step 4: Simplify right side
    64,987.40x = 3,872,685,274.31
  5. Step 5: Solve for x
    x = 3,872,685,274.31/64,987.40
  6. Step 6: Final answer
    x = 59,591.33

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1.5x scale

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.