Home / 91,714.40-126,571.12-51,441.20

Finding the Fourth Proportional to 91,714.40, 126,571.12 and 51,441.20

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Solution

The fourth proportional to 91,714.40, 126,571.12 and 51,441.20 is: 70,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,714.40 : 126,571.12 = 51,441.20 : x
  2. Step 2: Convert to fraction form
    91,714.40/126,571.12 = 51,441.20/x
  3. Step 3: Cross multiply
    91,714.40x = 126,571.12 × 51,441.20
  4. Step 4: Simplify right side
    91,714.40x = 6,510,970,298.14
  5. Step 5: Solve for x
    x = 6,510,970,298.14/91,714.40
  6. Step 6: Final answer
    x = 70,991.80

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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.