Home / 78,421,481.28-108,224,630.15-43,616,688.48

Finding the Fourth Proportional to 78,421,481.28, 108,224,630.15 and 43,616,688.48

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Solution

The fourth proportional to 78,421,481.28, 108,224,630.15 and 43,616,688.48 is: 60,192,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421,481.28 : 108,224,630.15 = 43,616,688.48 : x
  2. Step 2: Convert to fraction form
    78,421,481.28/108,224,630.15 = 43,616,688.48/x
  3. Step 3: Cross multiply
    78,421,481.28x = 108,224,630.15 × 43,616,688.48
  4. Step 4: Simplify right side
    78,421,481.28x = 4,720,399,978,897,682
  5. Step 5: Solve for x
    x = 4,720,399,978,897,682/78,421,481.28
  6. Step 6: Final answer
    x = 60,192,690.85

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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.