Home / 45,330.60-68,018.18-20,388.27

Finding the Fourth Proportional to 45,330.60, 68,018.18 and 20,388.27

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Solution

The fourth proportional to 45,330.60, 68,018.18 and 20,388.27 is: 30,592.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,330.60 : 68,018.18 = 20,388.27 : x
  2. Step 2: Convert to fraction form
    45,330.60/68,018.18 = 20,388.27/x
  3. Step 3: Cross multiply
    45,330.60x = 68,018.18 × 20,388.27
  4. Step 4: Simplify right side
    45,330.60x = 1,386,773,018.75
  5. Step 5: Solve for x
    x = 1,386,773,018.75/45,330.60
  6. Step 6: Final answer
    x = 30,592.43

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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.