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Finding the Fourth Proportional to 60,253.39, 90,390.34 and 20,801.28

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Solution

The fourth proportional to 60,253.39, 90,390.34 and 20,801.28 is: 31,205.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,253.39 : 90,390.34 = 20,801.28 : x
  2. Step 2: Convert to fraction form
    60,253.39/90,390.34 = 20,801.28/x
  3. Step 3: Cross multiply
    60,253.39x = 90,390.34 × 20,801.28
  4. Step 4: Simplify right side
    60,253.39x = 1,880,234,380.67
  5. Step 5: Solve for x
    x = 1,880,234,380.67/60,253.39
  6. Step 6: Final answer
    x = 31,205.45

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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.