Home / 87,971.04-121,400.13-47,684.80

Finding the Fourth Proportional to 87,971.04, 121,400.13 and 47,684.80

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Solution

The fourth proportional to 87,971.04, 121,400.13 and 47,684.80 is: 65,805.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,971.04 : 121,400.13 = 47,684.80 : x
  2. Step 2: Convert to fraction form
    87,971.04/121,400.13 = 47,684.80/x
  3. Step 3: Cross multiply
    87,971.04x = 121,400.13 × 47,684.80
  4. Step 4: Simplify right side
    87,971.04x = 5,788,940,615.52
  5. Step 5: Solve for x
    x = 5,788,940,615.52/87,971.04
  6. Step 6: Final answer
    x = 65,805.07

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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.