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Finding the Fourth Proportional to 64,856.30, 97,282.01 and 20,485.71

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Solution

The fourth proportional to 64,856.30, 97,282.01 and 20,485.71 is: 30,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,856.30 : 97,282.01 = 20,485.71 : x
  2. Step 2: Convert to fraction form
    64,856.30/97,282.01 = 20,485.71/x
  3. Step 3: Cross multiply
    64,856.30x = 97,282.01 × 20,485.71
  4. Step 4: Simplify right side
    64,856.30x = 1,992,891,096.29
  5. Step 5: Solve for x
    x = 1,992,891,096.29/64,856.30
  6. Step 6: Final answer
    x = 30,727.80

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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.