Home / 87,619.66-120,915-47,333.41

Finding the Fourth Proportional to 87,619.66, 120,915 and 47,333.41

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Solution

The fourth proportional to 87,619.66, 120,915 and 47,333.41 is: 65,320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.66 : 120,915 = 47,333.41 : x
  2. Step 2: Convert to fraction form
    87,619.66/120,915 = 47,333.41/x
  3. Step 3: Cross multiply
    87,619.66x = 120,915 × 47,333.41
  4. Step 4: Simplify right side
    87,619.66x = 5,723,318,967.86
  5. Step 5: Solve for x
    x = 5,723,318,967.86/87,619.66
  6. Step 6: Final answer
    x = 65,320.03

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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.