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Finding the Fourth Proportional to 64,349.72, 88,772.58 and 40,489.55

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Solution

The fourth proportional to 64,349.72, 88,772.58 and 40,489.55 is: 55,856.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,349.72 : 88,772.58 = 40,489.55 : x
  2. Step 2: Convert to fraction form
    64,349.72/88,772.58 = 40,489.55/x
  3. Step 3: Cross multiply
    64,349.72x = 88,772.58 × 40,489.55
  4. Step 4: Simplify right side
    64,349.72x = 3,594,361,372.68
  5. Step 5: Solve for x
    x = 3,594,361,372.68/64,349.72
  6. Step 6: Final answer
    x = 55,856.68

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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.