Home / 68,612.20-102,716.70-51,159.40

Finding the Fourth Proportional to 68,612.20, 102,716.70 and 51,159.40

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Solution

The fourth proportional to 68,612.20, 102,716.70 and 51,159.40 is: 76,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,612.20 : 102,716.70 = 51,159.40 : x
  2. Step 2: Convert to fraction form
    68,612.20/102,716.70 = 51,159.40/x
  3. Step 3: Cross multiply
    68,612.20x = 102,716.70 × 51,159.40
  4. Step 4: Simplify right side
    68,612.20x = 5,254,924,741.98
  5. Step 5: Solve for x
    x = 5,254,924,741.98/68,612.20
  6. Step 6: Final answer
    x = 76,588.78

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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.