Home / 72,997.20-109,277.10-43,399.80

Finding the Fourth Proportional to 72,997.20, 109,277.10 and 43,399.80

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Solution

The fourth proportional to 72,997.20, 109,277.10 and 43,399.80 is: 64,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,997.20 : 109,277.10 = 43,399.80 : x
  2. Step 2: Convert to fraction form
    72,997.20/109,277.10 = 43,399.80/x
  3. Step 3: Cross multiply
    72,997.20x = 109,277.10 × 43,399.80
  4. Step 4: Simplify right side
    72,997.20x = 4,742,604,284.58
  5. Step 5: Solve for x
    x = 4,742,604,284.58/72,997.20
  6. Step 6: Final answer
    x = 64,969.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.