Home / 87,540.40-120,800.80-51,733.74

Finding the Fourth Proportional to 87,540.40, 120,800.80 and 51,733.74

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Solution

The fourth proportional to 87,540.40, 120,800.80 and 51,733.74 is: 71,389.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,540.40 : 120,800.80 = 51,733.74 : x
  2. Step 2: Convert to fraction form
    87,540.40/120,800.80 = 51,733.74/x
  3. Step 3: Cross multiply
    87,540.40x = 120,800.80 × 51,733.74
  4. Step 4: Simplify right side
    87,540.40x = 6,249,477,178.99
  5. Step 5: Solve for x
    x = 6,249,477,178.99/87,540.40
  6. Step 6: Final answer
    x = 71,389.63

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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.