Home / 87,867.47-121,256.90-47,581.24

Finding the Fourth Proportional to 87,867.47, 121,256.90 and 47,581.24

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Solution

The fourth proportional to 87,867.47, 121,256.90 and 47,581.24 is: 65,661.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,867.47 : 121,256.90 = 47,581.24 : x
  2. Step 2: Convert to fraction form
    87,867.47/121,256.90 = 47,581.24/x
  3. Step 3: Cross multiply
    87,867.47x = 121,256.90 × 47,581.24
  4. Step 4: Simplify right side
    87,867.47x = 5,769,552,816.37
  5. Step 5: Solve for x
    x = 5,769,552,816.37/87,867.47
  6. Step 6: Final answer
    x = 65,661.99

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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.