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Finding the Fourth Proportional to 60,360.48, 90,530.64 and 20,908.20

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Solution

The fourth proportional to 60,360.48, 90,530.64 and 20,908.20 is: 31,358.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,360.48 : 90,530.64 = 20,908.20 : x
  2. Step 2: Convert to fraction form
    60,360.48/90,530.64 = 20,908.20/x
  3. Step 3: Cross multiply
    60,360.48x = 90,530.64 × 20,908.20
  4. Step 4: Simplify right side
    60,360.48x = 1,892,832,727.25
  5. Step 5: Solve for x
    x = 1,892,832,727.25/60,360.48
  6. Step 6: Final answer
    x = 31,358.81

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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.