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Finding the Fourth Proportional to 80,068.78, 120,120.18 and 23,913.28

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Solution

The fourth proportional to 80,068.78, 120,120.18 and 23,913.28 is: 35,875.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,068.78 : 120,120.18 = 23,913.28 : x
  2. Step 2: Convert to fraction form
    80,068.78/120,120.18 = 23,913.28/x
  3. Step 3: Cross multiply
    80,068.78x = 120,120.18 × 23,913.28
  4. Step 4: Simplify right side
    80,068.78x = 2,872,467,497.99
  5. Step 5: Solve for x
    x = 2,872,467,497.99/80,068.78
  6. Step 6: Final answer
    x = 35,875.00

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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.