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Finding the Fourth Proportional to 60,228.48, 90,347.84 and 20,769.60

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Solution

The fourth proportional to 60,228.48, 90,347.84 and 20,769.60 is: 31,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,228.48 : 90,347.84 = 20,769.60 : x
  2. Step 2: Convert to fraction form
    60,228.48/90,347.84 = 20,769.60/x
  3. Step 3: Cross multiply
    60,228.48x = 90,347.84 × 20,769.60
  4. Step 4: Simplify right side
    60,228.48x = 1,876,488,497.66
  5. Step 5: Solve for x
    x = 1,876,488,497.66/60,228.48
  6. Step 6: Final answer
    x = 31,156.17

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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.