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Finding the Fourth Proportional to 64,650.71, 96,972.13 and 30,940.70

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Solution

The fourth proportional to 64,650.71, 96,972.13 and 30,940.70 is: 46,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,650.71 : 96,972.13 = 30,940.70 : x
  2. Step 2: Convert to fraction form
    64,650.71/96,972.13 = 30,940.70/x
  3. Step 3: Cross multiply
    64,650.71x = 96,972.13 × 30,940.70
  4. Step 4: Simplify right side
    64,650.71x = 3,000,385,136.51
  5. Step 5: Solve for x
    x = 3,000,385,136.51/64,650.71
  6. Step 6: Final answer
    x = 46,409.16

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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.