Home / 87,359.95-120,518.79-55,511.77

Finding the Fourth Proportional to 87,359.95, 120,518.79 and 55,511.77

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Solution

The fourth proportional to 87,359.95, 120,518.79 and 55,511.77 is: 76,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,359.95 : 120,518.79 = 55,511.77 : x
  2. Step 2: Convert to fraction form
    87,359.95/120,518.79 = 55,511.77/x
  3. Step 3: Cross multiply
    87,359.95x = 120,518.79 × 55,511.77
  4. Step 4: Simplify right side
    87,359.95x = 6,690,211,351.16
  5. Step 5: Solve for x
    x = 6,690,211,351.16/87,359.95
  6. Step 6: Final answer
    x = 76,582.13

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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.