Home / 68,219.86-102,333.59-20,842.15

Finding the Fourth Proportional to 68,219.86, 102,333.59 and 20,842.15

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Solution

The fourth proportional to 68,219.86, 102,333.59 and 20,842.15 is: 31,264.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,219.86 : 102,333.59 = 20,842.15 : x
  2. Step 2: Convert to fraction form
    68,219.86/102,333.59 = 20,842.15/x
  3. Step 3: Cross multiply
    68,219.86x = 102,333.59 × 20,842.15
  4. Step 4: Simplify right side
    68,219.86x = 2,132,852,032.82
  5. Step 5: Solve for x
    x = 2,132,852,032.82/68,219.86
  6. Step 6: Final answer
    x = 31,264.39

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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.