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Finding the Fourth Proportional to 60,240.70, 90,353.76 and 20,801.80

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Solution

The fourth proportional to 60,240.70, 90,353.76 and 20,801.80 is: 31,200.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,240.70 : 90,353.76 = 20,801.80 : x
  2. Step 2: Convert to fraction form
    60,240.70/90,353.76 = 20,801.80/x
  3. Step 3: Cross multiply
    60,240.70x = 90,353.76 × 20,801.80
  4. Step 4: Simplify right side
    60,240.70x = 1,879,520,844.77
  5. Step 5: Solve for x
    x = 1,879,520,844.77/60,240.70
  6. Step 6: Final answer
    x = 31,200.18

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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.