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Finding the Fourth Proportional to 64,964.46, 97,445.64 and 20,591.16

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Solution

The fourth proportional to 64,964.46, 97,445.64 and 20,591.16 is: 30,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,964.46 : 97,445.64 = 20,591.16 : x
  2. Step 2: Convert to fraction form
    64,964.46/97,445.64 = 20,591.16/x
  3. Step 3: Cross multiply
    64,964.46x = 97,445.64 × 20,591.16
  4. Step 4: Simplify right side
    64,964.46x = 2,006,518,764.54
  5. Step 5: Solve for x
    x = 2,006,518,764.54/64,964.46
  6. Step 6: Final answer
    x = 30,886.41

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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.