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Finding the Fourth Proportional to 64,832.70, 89,380.35 and 40,947.42

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Solution

The fourth proportional to 64,832.70, 89,380.35 and 40,947.42 is: 56,451.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,832.70 : 89,380.35 = 40,947.42 : x
  2. Step 2: Convert to fraction form
    64,832.70/89,380.35 = 40,947.42/x
  3. Step 3: Cross multiply
    64,832.70x = 89,380.35 × 40,947.42
  4. Step 4: Simplify right side
    64,832.70x = 3,659,894,731.20
  5. Step 5: Solve for x
    x = 3,659,894,731.20/64,832.70
  6. Step 6: Final answer
    x = 56,451.37

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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.