Home / 87,878.90-121,272.27-47,591.74

Finding the Fourth Proportional to 87,878.90, 121,272.27 and 47,591.74

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Solution

The fourth proportional to 87,878.90, 121,272.27 and 47,591.74 is: 65,676.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,878.90 : 121,272.27 = 47,591.74 : x
  2. Step 2: Convert to fraction form
    87,878.90/121,272.27 = 47,591.74/x
  3. Step 3: Cross multiply
    87,878.90x = 121,272.27 × 47,591.74
  4. Step 4: Simplify right side
    87,878.90x = 5,771,558,462.03
  5. Step 5: Solve for x
    x = 5,771,558,462.03/87,878.90
  6. Step 6: Final answer
    x = 65,676.27

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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.