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Finding the Fourth Proportional to 60,484.74, 90,753.12 and 21,020.34

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Solution

The fourth proportional to 60,484.74, 90,753.12 and 21,020.34 is: 31,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,484.74 : 90,753.12 = 21,020.34 : x
  2. Step 2: Convert to fraction form
    60,484.74/90,753.12 = 21,020.34/x
  3. Step 3: Cross multiply
    60,484.74x = 90,753.12 × 21,020.34
  4. Step 4: Simplify right side
    60,484.74x = 1,907,661,438.46
  5. Step 5: Solve for x
    x = 1,907,661,438.46/60,484.74
  6. Step 6: Final answer
    x = 31,539.55

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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.