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Finding the Fourth Proportional to 64,641.44, 89,205.72 and 36,346.88

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Solution

The fourth proportional to 64,641.44, 89,205.72 and 36,346.88 is: 50,158.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,641.44 : 89,205.72 = 36,346.88 : x
  2. Step 2: Convert to fraction form
    64,641.44/89,205.72 = 36,346.88/x
  3. Step 3: Cross multiply
    64,641.44x = 89,205.72 × 36,346.88
  4. Step 4: Simplify right side
    64,641.44x = 3,242,349,600.15
  5. Step 5: Solve for x
    x = 3,242,349,600.15/64,641.44
  6. Step 6: Final answer
    x = 50,158.99

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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.