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Finding the Fourth Proportional to 64,818.92, 89,449.56 and 36,138.26

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Solution

The fourth proportional to 64,818.92, 89,449.56 and 36,138.26 is: 49,870.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,818.92 : 89,449.56 = 36,138.26 : x
  2. Step 2: Convert to fraction form
    64,818.92/89,449.56 = 36,138.26/x
  3. Step 3: Cross multiply
    64,818.92x = 89,449.56 × 36,138.26
  4. Step 4: Simplify right side
    64,818.92x = 3,232,551,456.17
  5. Step 5: Solve for x
    x = 3,232,551,456.17/64,818.92
  6. Step 6: Final answer
    x = 49,870.49

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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.