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Finding the Fourth Proportional to 60,811.20, 91,216.80 and 54,906.30

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Solution

The fourth proportional to 60,811.20, 91,216.80 and 54,906.30 is: 82,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,811.20 : 91,216.80 = 54,906.30 : x
  2. Step 2: Convert to fraction form
    60,811.20/91,216.80 = 54,906.30/x
  3. Step 3: Cross multiply
    60,811.20x = 91,216.80 × 54,906.30
  4. Step 4: Simplify right side
    60,811.20x = 5,008,376,985.84
  5. Step 5: Solve for x
    x = 5,008,376,985.84/60,811.20
  6. Step 6: Final answer
    x = 82,359.45

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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.