Home / 91,720.21-126,520.26-57,674.80

Finding the Fourth Proportional to 91,720.21, 126,520.26 and 57,674.80

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Solution

The fourth proportional to 91,720.21, 126,520.26 and 57,674.80 is: 79,557.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.21 : 126,520.26 = 57,674.80 : x
  2. Step 2: Convert to fraction form
    91,720.21/126,520.26 = 57,674.80/x
  3. Step 3: Cross multiply
    91,720.21x = 126,520.26 × 57,674.80
  4. Step 4: Simplify right side
    91,720.21x = 7,297,030,691.45
  5. Step 5: Solve for x
    x = 7,297,030,691.45/91,720.21
  6. Step 6: Final answer
    x = 79,557.50

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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.