Home / 87,030.72-120,080.88-51,217.92

Finding the Fourth Proportional to 87,030.72, 120,080.88 and 51,217.92

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Solution

The fourth proportional to 87,030.72, 120,080.88 and 51,217.92 is: 70,668.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,030.72 : 120,080.88 = 51,217.92 : x
  2. Step 2: Convert to fraction form
    87,030.72/120,080.88 = 51,217.92/x
  3. Step 3: Cross multiply
    87,030.72x = 120,080.88 × 51,217.92
  4. Step 4: Simplify right side
    87,030.72x = 6,150,292,905.37
  5. Step 5: Solve for x
    x = 6,150,292,905.37/87,030.72
  6. Step 6: Final answer
    x = 70,668.07

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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.