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Finding the Fourth Proportional to 64,620.30, 96,890.76 and 25,131.39

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Solution

The fourth proportional to 64,620.30, 96,890.76 and 25,131.39 is: 37,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,620.30 : 96,890.76 = 25,131.39 : x
  2. Step 2: Convert to fraction form
    64,620.30/96,890.76 = 25,131.39/x
  3. Step 3: Cross multiply
    64,620.30x = 96,890.76 × 25,131.39
  4. Step 4: Simplify right side
    64,620.30x = 2,434,999,476.96
  5. Step 5: Solve for x
    x = 2,434,999,476.96/64,620.30
  6. Step 6: Final answer
    x = 37,681.65

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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.