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Finding the Fourth Proportional to 64,636.64, 96,956.16 and 20,262.40

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Solution

The fourth proportional to 64,636.64, 96,956.16 and 20,262.40 is: 30,393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,636.64 : 96,956.16 = 20,262.40 : x
  2. Step 2: Convert to fraction form
    64,636.64/96,956.16 = 20,262.40/x
  3. Step 3: Cross multiply
    64,636.64x = 96,956.16 × 20,262.40
  4. Step 4: Simplify right side
    64,636.64x = 1,964,564,496.38
  5. Step 5: Solve for x
    x = 1,964,564,496.38/64,636.64
  6. Step 6: Final answer
    x = 30,393.98

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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.