Home / 87,992.48-121,429.24-47,706.12

Finding the Fourth Proportional to 87,992.48, 121,429.24 and 47,706.12

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Solution

The fourth proportional to 87,992.48, 121,429.24 and 47,706.12 is: 65,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,992.48 : 121,429.24 = 47,706.12 : x
  2. Step 2: Convert to fraction form
    87,992.48/121,429.24 = 47,706.12/x
  3. Step 3: Cross multiply
    87,992.48x = 121,429.24 × 47,706.12
  4. Step 4: Simplify right side
    87,992.48x = 5,792,918,044.03
  5. Step 5: Solve for x
    x = 5,792,918,044.03/87,992.48
  6. Step 6: Final answer
    x = 65,834.24

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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.