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Finding the Fourth Proportional to 60,359.96, 90,509.56 and 20,906.48

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Solution

The fourth proportional to 60,359.96, 90,509.56 and 20,906.48 is: 31,349.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,359.96 : 90,509.56 = 20,906.48 : x
  2. Step 2: Convert to fraction form
    60,359.96/90,509.56 = 20,906.48/x
  3. Step 3: Cross multiply
    60,359.96x = 90,509.56 × 20,906.48
  4. Step 4: Simplify right side
    60,359.96x = 1,892,235,801.13
  5. Step 5: Solve for x
    x = 1,892,235,801.13/60,359.96
  6. Step 6: Final answer
    x = 31,349.19

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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.