Home / 87,288.76-120,429.75-50,981.86

Finding the Fourth Proportional to 87,288.76, 120,429.75 and 50,981.86

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Solution

The fourth proportional to 87,288.76, 120,429.75 and 50,981.86 is: 70,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,288.76 : 120,429.75 = 50,981.86 : x
  2. Step 2: Convert to fraction form
    87,288.76/120,429.75 = 50,981.86/x
  3. Step 3: Cross multiply
    87,288.76x = 120,429.75 × 50,981.86
  4. Step 4: Simplify right side
    87,288.76x = 6,139,732,654.34
  5. Step 5: Solve for x
    x = 6,139,732,654.34/87,288.76
  6. Step 6: Final answer
    x = 70,338.18

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1.5x scale

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.