Home / 87,010.58-120,132.41-66,831.35

Finding the Fourth Proportional to 87,010.58, 120,132.41 and 66,831.35

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Solution

The fourth proportional to 87,010.58, 120,132.41 and 66,831.35 is: 92,271.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,010.58 : 120,132.41 = 66,831.35 : x
  2. Step 2: Convert to fraction form
    87,010.58/120,132.41 = 66,831.35/x
  3. Step 3: Cross multiply
    87,010.58x = 120,132.41 × 66,831.35
  4. Step 4: Simplify right side
    87,010.58x = 8,028,610,204.23
  5. Step 5: Solve for x
    x = 8,028,610,204.23/87,010.58
  6. Step 6: Final answer
    x = 92,271.66

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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.