Home / 68,089.20-102,133.92-21,345.72

Finding the Fourth Proportional to 68,089.20, 102,133.92 and 21,345.72

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Solution

The fourth proportional to 68,089.20, 102,133.92 and 21,345.72 is: 32,018.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,089.20 : 102,133.92 = 21,345.72 : x
  2. Step 2: Convert to fraction form
    68,089.20/102,133.92 = 21,345.72/x
  3. Step 3: Cross multiply
    68,089.20x = 102,133.92 × 21,345.72
  4. Step 4: Simplify right side
    68,089.20x = 2,180,122,058.82
  5. Step 5: Solve for x
    x = 2,180,122,058.82/68,089.20
  6. Step 6: Final answer
    x = 32,018.62

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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.