Home / 87,987.68-121,369.23-52,153.70

Finding the Fourth Proportional to 87,987.68, 121,369.23 and 52,153.70

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Solution

The fourth proportional to 87,987.68, 121,369.23 and 52,153.70 is: 71,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,987.68 : 121,369.23 = 52,153.70 : x
  2. Step 2: Convert to fraction form
    87,987.68/121,369.23 = 52,153.70/x
  3. Step 3: Cross multiply
    87,987.68x = 121,369.23 × 52,153.70
  4. Step 4: Simplify right side
    87,987.68x = 6,329,854,410.65
  5. Step 5: Solve for x
    x = 6,329,854,410.65/87,987.68
  6. Step 6: Final answer
    x = 71,940.24

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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.