Home / 78,983.92-109,000.74-43,176.36

Finding the Fourth Proportional to 78,983.92, 109,000.74 and 43,176.36

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Solution

The fourth proportional to 78,983.92, 109,000.74 and 43,176.36 is: 59,584.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,983.92 : 109,000.74 = 43,176.36 : x
  2. Step 2: Convert to fraction form
    78,983.92/109,000.74 = 43,176.36/x
  3. Step 3: Cross multiply
    78,983.92x = 109,000.74 × 43,176.36
  4. Step 4: Simplify right side
    78,983.92x = 4,706,255,190.51
  5. Step 5: Solve for x
    x = 4,706,255,190.51/78,983.92
  6. Step 6: Final answer
    x = 59,584.98

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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.