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Finding the Fourth Proportional to 78,789.87, 108,727.54 and 44,802.07

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Solution

The fourth proportional to 78,789.87, 108,727.54 and 44,802.07 is: 61,825.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,789.87 : 108,727.54 = 44,802.07 : x
  2. Step 2: Convert to fraction form
    78,789.87/108,727.54 = 44,802.07/x
  3. Step 3: Cross multiply
    78,789.87x = 108,727.54 × 44,802.07
  4. Step 4: Simplify right side
    78,789.87x = 4,871,218,474.18
  5. Step 5: Solve for x
    x = 4,871,218,474.18/78,789.87
  6. Step 6: Final answer
    x = 61,825.44

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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.