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Finding the Fourth Proportional to 64,491.40, 96,669.90 and 31,161.16

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Solution

The fourth proportional to 64,491.40, 96,669.90 and 31,161.16 is: 46,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,491.40 : 96,669.90 = 31,161.16 : x
  2. Step 2: Convert to fraction form
    64,491.40/96,669.90 = 31,161.16/x
  3. Step 3: Cross multiply
    64,491.40x = 96,669.90 × 31,161.16
  4. Step 4: Simplify right side
    64,491.40x = 3,012,346,221.08
  5. Step 5: Solve for x
    x = 3,012,346,221.08/64,491.40
  6. Step 6: Final answer
    x = 46,709.27

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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.