Home / 87,855.28-121,239.77-47,568.21

Finding the Fourth Proportional to 87,855.28, 121,239.77 and 47,568.21

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Solution

The fourth proportional to 87,855.28, 121,239.77 and 47,568.21 is: 65,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.28 : 121,239.77 = 47,568.21 : x
  2. Step 2: Convert to fraction form
    87,855.28/121,239.77 = 47,568.21/x
  3. Step 3: Cross multiply
    87,855.28x = 121,239.77 × 47,568.21
  4. Step 4: Simplify right side
    87,855.28x = 5,767,158,233.51
  5. Step 5: Solve for x
    x = 5,767,158,233.51/87,855.28
  6. Step 6: Final answer
    x = 65,643.85

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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.