Home / 52,103.28-78,154.56-12,660.48

Finding the Fourth Proportional to 52,103.28, 78,154.56 and 12,660.48

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Solution

The fourth proportional to 52,103.28, 78,154.56 and 12,660.48 is: 18,990.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,103.28 : 78,154.56 = 12,660.48 : x
  2. Step 2: Convert to fraction form
    52,103.28/78,154.56 = 12,660.48/x
  3. Step 3: Cross multiply
    52,103.28x = 78,154.56 × 12,660.48
  4. Step 4: Simplify right side
    52,103.28x = 989,474,243.79
  5. Step 5: Solve for x
    x = 989,474,243.79/52,103.28
  6. Step 6: Final answer
    x = 18,990.63

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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.