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Finding the Fourth Proportional to 60,369.91, 90,534.36 and 20,917.83

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Solution

The fourth proportional to 60,369.91, 90,534.36 and 20,917.83 is: 31,369.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,369.91 : 90,534.36 = 20,917.83 : x
  2. Step 2: Convert to fraction form
    60,369.91/90,534.36 = 20,917.83/x
  3. Step 3: Cross multiply
    60,369.91x = 90,534.36 × 20,917.83
  4. Step 4: Simplify right side
    60,369.91x = 1,893,782,351.64
  5. Step 5: Solve for x
    x = 1,893,782,351.64/60,369.91
  6. Step 6: Final answer
    x = 31,369.64

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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.