Home / 78,048.24-107,616.79-57,659.81

Finding the Fourth Proportional to 78,048.24, 107,616.79 and 57,659.81

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Solution

The fourth proportional to 78,048.24, 107,616.79 and 57,659.81 is: 79,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,048.24 : 107,616.79 = 57,659.81 : x
  2. Step 2: Convert to fraction form
    78,048.24/107,616.79 = 57,659.81/x
  3. Step 3: Cross multiply
    78,048.24x = 107,616.79 × 57,659.81
  4. Step 4: Simplify right side
    78,048.24x = 6,205,163,664.21
  5. Step 5: Solve for x
    x = 6,205,163,664.21/78,048.24
  6. Step 6: Final answer
    x = 79,504.21

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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.