Home / 45,333.90-68,023.20-20,391.60

Finding the Fourth Proportional to 45,333.90, 68,023.20 and 20,391.60

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Solution

The fourth proportional to 45,333.90, 68,023.20 and 20,391.60 is: 30,597.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,333.90 : 68,023.20 = 20,391.60 : x
  2. Step 2: Convert to fraction form
    45,333.90/68,023.20 = 20,391.60/x
  3. Step 3: Cross multiply
    45,333.90x = 68,023.20 × 20,391.60
  4. Step 4: Simplify right side
    45,333.90x = 1,387,101,885.12
  5. Step 5: Solve for x
    x = 1,387,101,885.12/45,333.90
  6. Step 6: Final answer
    x = 30,597.45

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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.