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Finding the Fourth Proportional to 64,296.89, 96,441.63 and 19,317.29

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Solution

The fourth proportional to 64,296.89, 96,441.63 and 19,317.29 is: 28,974.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,296.89 : 96,441.63 = 19,317.29 : x
  2. Step 2: Convert to fraction form
    64,296.89/96,441.63 = 19,317.29/x
  3. Step 3: Cross multiply
    64,296.89x = 96,441.63 × 19,317.29
  4. Step 4: Simplify right side
    64,296.89x = 1,862,990,434.46
  5. Step 5: Solve for x
    x = 1,862,990,434.46/64,296.89
  6. Step 6: Final answer
    x = 28,974.81

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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.