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Finding the Fourth Proportional to 78,303.99, 108,149.22 and 51,566.01

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Solution

The fourth proportional to 78,303.99, 108,149.22 and 51,566.01 is: 71,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,303.99 : 108,149.22 = 51,566.01 : x
  2. Step 2: Convert to fraction form
    78,303.99/108,149.22 = 51,566.01/x
  3. Step 3: Cross multiply
    78,303.99x = 108,149.22 × 51,566.01
  4. Step 4: Simplify right side
    78,303.99x = 5,576,823,760.01
  5. Step 5: Solve for x
    x = 5,576,823,760.01/78,303.99
  6. Step 6: Final answer
    x = 71,220.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.