Home / 78,929.46-118,381.41-28,997.28

Finding the Fourth Proportional to 78,929.46, 118,381.41 and 28,997.28

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Solution

The fourth proportional to 78,929.46, 118,381.41 and 28,997.28 is: 43,491.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,929.46 : 118,381.41 = 28,997.28 : x
  2. Step 2: Convert to fraction form
    78,929.46/118,381.41 = 28,997.28/x
  3. Step 3: Cross multiply
    78,929.46x = 118,381.41 × 28,997.28
  4. Step 4: Simplify right side
    78,929.46x = 3,432,738,892.56
  5. Step 5: Solve for x
    x = 3,432,738,892.56/78,929.46
  6. Step 6: Final answer
    x = 43,491.22

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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.