Home / 78,632.07-108,463.26-47,991.16

Finding the Fourth Proportional to 78,632.07, 108,463.26 and 47,991.16

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Solution

The fourth proportional to 78,632.07, 108,463.26 and 47,991.16 is: 66,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,632.07 : 108,463.26 = 47,991.16 : x
  2. Step 2: Convert to fraction form
    78,632.07/108,463.26 = 47,991.16/x
  3. Step 3: Cross multiply
    78,632.07x = 108,463.26 × 47,991.16
  4. Step 4: Simplify right side
    78,632.07x = 5,205,277,664.78
  5. Step 5: Solve for x
    x = 5,205,277,664.78/78,632.07
  6. Step 6: Final answer
    x = 66,197.90

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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.