Home / 87,364.45-120,265.41-64,660.65

Finding the Fourth Proportional to 87,364.45, 120,265.41 and 64,660.65

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Solution

The fourth proportional to 87,364.45, 120,265.41 and 64,660.65 is: 89,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,364.45 : 120,265.41 = 64,660.65 : x
  2. Step 2: Convert to fraction form
    87,364.45/120,265.41 = 64,660.65/x
  3. Step 3: Cross multiply
    87,364.45x = 120,265.41 × 64,660.65
  4. Step 4: Simplify right side
    87,364.45x = 7,776,438,981.79
  5. Step 5: Solve for x
    x = 7,776,438,981.79/87,364.45
  6. Step 6: Final answer
    x = 89,011.48

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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.