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Finding the Fourth Proportional to 60,847.80, 91,285.30 and 21,406.20

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Solution

The fourth proportional to 60,847.80, 91,285.30 and 21,406.20 is: 32,114.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,847.80 : 91,285.30 = 21,406.20 : x
  2. Step 2: Convert to fraction form
    60,847.80/91,285.30 = 21,406.20/x
  3. Step 3: Cross multiply
    60,847.80x = 91,285.30 × 21,406.20
  4. Step 4: Simplify right side
    60,847.80x = 1,954,071,388.86
  5. Step 5: Solve for x
    x = 1,954,071,388.86/60,847.80
  6. Step 6: Final answer
    x = 32,114.08

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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.