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Finding the Fourth Proportional to 60,203.76, 90,323.46 and 20,764.86

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Solution

The fourth proportional to 60,203.76, 90,323.46 and 20,764.86 is: 31,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,203.76 : 90,323.46 = 20,764.86 : x
  2. Step 2: Convert to fraction form
    60,203.76/90,323.46 = 20,764.86/x
  3. Step 3: Cross multiply
    60,203.76x = 90,323.46 × 20,764.86
  4. Step 4: Simplify right side
    60,203.76x = 1,875,554,001.62
  5. Step 5: Solve for x
    x = 1,875,554,001.62/60,203.76
  6. Step 6: Final answer
    x = 31,153.44

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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.