Home / 78,813.92-108,762.28-43,003.16

Finding the Fourth Proportional to 78,813.92, 108,762.28 and 43,003.16

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Solution

The fourth proportional to 78,813.92, 108,762.28 and 43,003.16 is: 59,343.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,813.92 : 108,762.28 = 43,003.16 : x
  2. Step 2: Convert to fraction form
    78,813.92/108,762.28 = 43,003.16/x
  3. Step 3: Cross multiply
    78,813.92x = 108,762.28 × 43,003.16
  4. Step 4: Simplify right side
    78,813.92x = 4,677,121,728.80
  5. Step 5: Solve for x
    x = 4,677,121,728.80/78,813.92
  6. Step 6: Final answer
    x = 59,343.85

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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.