Home / 78,919.92-118,395.36-29,000.46

Finding the Fourth Proportional to 78,919.92, 118,395.36 and 29,000.46

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Solution

The fourth proportional to 78,919.92, 118,395.36 and 29,000.46 is: 43,506.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,919.92 : 118,395.36 = 29,000.46 : x
  2. Step 2: Convert to fraction form
    78,919.92/118,395.36 = 29,000.46/x
  3. Step 3: Cross multiply
    78,919.92x = 118,395.36 × 29,000.46
  4. Step 4: Simplify right side
    78,919.92x = 3,433,519,901.87
  5. Step 5: Solve for x
    x = 3,433,519,901.87/78,919.92
  6. Step 6: Final answer
    x = 43,506.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.