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Finding the Fourth Proportional to 59,889.20, 89,833.80 and 20,440.40

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Solution

The fourth proportional to 59,889.20, 89,833.80 and 20,440.40 is: 30,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,889.20 : 89,833.80 = 20,440.40 : x
  2. Step 2: Convert to fraction form
    59,889.20/89,833.80 = 20,440.40/x
  3. Step 3: Cross multiply
    59,889.20x = 89,833.80 × 20,440.40
  4. Step 4: Simplify right side
    59,889.20x = 1,836,238,805.52
  5. Step 5: Solve for x
    x = 1,836,238,805.52/59,889.20
  6. Step 6: Final answer
    x = 30,660.60

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Similar ratio
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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.