Home / 87,210.48-120,121.20-67,028.76

Finding the Fourth Proportional to 87,210.48, 120,121.20 and 67,028.76

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Solution

The fourth proportional to 87,210.48, 120,121.20 and 67,028.76 is: 92,323.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,210.48 : 120,121.20 = 67,028.76 : x
  2. Step 2: Convert to fraction form
    87,210.48/120,121.20 = 67,028.76/x
  3. Step 3: Cross multiply
    87,210.48x = 120,121.20 × 67,028.76
  4. Step 4: Simplify right side
    87,210.48x = 8,051,575,085.71
  5. Step 5: Solve for x
    x = 8,051,575,085.71/87,210.48
  6. Step 6: Final answer
    x = 92,323.48

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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.