Home / 87,690.26-121,012.41-47,404.05

Finding the Fourth Proportional to 87,690.26, 121,012.41 and 47,404.05

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Solution

The fourth proportional to 87,690.26, 121,012.41 and 47,404.05 is: 65,417.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.26 : 121,012.41 = 47,404.05 : x
  2. Step 2: Convert to fraction form
    87,690.26/121,012.41 = 47,404.05/x
  3. Step 3: Cross multiply
    87,690.26x = 121,012.41 × 47,404.05
  4. Step 4: Simplify right side
    87,690.26x = 5,736,478,334.26
  5. Step 5: Solve for x
    x = 5,736,478,334.26/87,690.26
  6. Step 6: Final answer
    x = 65,417.51

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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.