Home / 87,143.73-120,260.74-48,905.62

Finding the Fourth Proportional to 87,143.73, 120,260.74 and 48,905.62

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Solution

The fourth proportional to 87,143.73, 120,260.74 and 48,905.62 is: 67,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.73 : 120,260.74 = 48,905.62 : x
  2. Step 2: Convert to fraction form
    87,143.73/120,260.74 = 48,905.62/x
  3. Step 3: Cross multiply
    87,143.73x = 120,260.74 × 48,905.62
  4. Step 4: Simplify right side
    87,143.73x = 5,881,426,262.82
  5. Step 5: Solve for x
    x = 5,881,426,262.82/87,143.73
  6. Step 6: Final answer
    x = 67,491.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.