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Finding the Fourth Proportional to 60,807.40, 91,220.22 and 21,357.56

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Solution

The fourth proportional to 60,807.40, 91,220.22 and 21,357.56 is: 32,039.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,807.40 : 91,220.22 = 21,357.56 : x
  2. Step 2: Convert to fraction form
    60,807.40/91,220.22 = 21,357.56/x
  3. Step 3: Cross multiply
    60,807.40x = 91,220.22 × 21,357.56
  4. Step 4: Simplify right side
    60,807.40x = 1,948,241,321.86
  5. Step 5: Solve for x
    x = 1,948,241,321.86/60,807.40
  6. Step 6: Final answer
    x = 32,039.54

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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.