Home / 78,938.62-108,929.60-43,121.03

Finding the Fourth Proportional to 78,938.62, 108,929.60 and 43,121.03

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Solution

The fourth proportional to 78,938.62, 108,929.60 and 43,121.03 is: 59,503.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.62 : 108,929.60 = 43,121.03 : x
  2. Step 2: Convert to fraction form
    78,938.62/108,929.60 = 43,121.03/x
  3. Step 3: Cross multiply
    78,938.62x = 108,929.60 × 43,121.03
  4. Step 4: Simplify right side
    78,938.62x = 4,697,156,004.84
  5. Step 5: Solve for x
    x = 4,697,156,004.84/78,938.62
  6. Step 6: Final answer
    x = 59,503.91

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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.