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Finding the Fourth Proportional to 60,663.90, 90,998.55 and 20,682.30

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Solution

The fourth proportional to 60,663.90, 90,998.55 and 20,682.30 is: 31,024.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,663.90 : 90,998.55 = 20,682.30 : x
  2. Step 2: Convert to fraction form
    60,663.90/90,998.55 = 20,682.30/x
  3. Step 3: Cross multiply
    60,663.90x = 90,998.55 × 20,682.30
  4. Step 4: Simplify right side
    60,663.90x = 1,882,059,310.67
  5. Step 5: Solve for x
    x = 1,882,059,310.67/60,663.90
  6. Step 6: Final answer
    x = 31,024.37

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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.