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Finding the Fourth Proportional to 79,510.92, 119,266.53 and 19,539.43

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Solution

The fourth proportional to 79,510.92, 119,266.53 and 19,539.43 is: 29,309.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,510.92 : 119,266.53 = 19,539.43 : x
  2. Step 2: Convert to fraction form
    79,510.92/119,266.53 = 19,539.43/x
  3. Step 3: Cross multiply
    79,510.92x = 119,266.53 × 19,539.43
  4. Step 4: Simplify right side
    79,510.92x = 2,330,399,642.84
  5. Step 5: Solve for x
    x = 2,330,399,642.84/79,510.92
  6. Step 6: Final answer
    x = 29,309.18

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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.