Home / 76,426.60-114,639.90-20,266.60

Finding the Fourth Proportional to 76,426.60, 114,639.90 and 20,266.60

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Solution

The fourth proportional to 76,426.60, 114,639.90 and 20,266.60 is: 30,399.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,426.60 : 114,639.90 = 20,266.60 : x
  2. Step 2: Convert to fraction form
    76,426.60/114,639.90 = 20,266.60/x
  3. Step 3: Cross multiply
    76,426.60x = 114,639.90 × 20,266.60
  4. Step 4: Simplify right side
    76,426.60x = 2,323,360,997.34
  5. Step 5: Solve for x
    x = 2,323,360,997.34/76,426.60
  6. Step 6: Final answer
    x = 30,399.90

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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.