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Finding the Fourth Proportional to 60,355.31, 90,533.08 and 20,912.46

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Solution

The fourth proportional to 60,355.31, 90,533.08 and 20,912.46 is: 31,368.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,355.31 : 90,533.08 = 20,912.46 : x
  2. Step 2: Convert to fraction form
    60,355.31/90,533.08 = 20,912.46/x
  3. Step 3: Cross multiply
    60,355.31x = 90,533.08 × 20,912.46
  4. Step 4: Simplify right side
    60,355.31x = 1,893,269,414.18
  5. Step 5: Solve for x
    x = 1,893,269,414.18/60,355.31
  6. Step 6: Final answer
    x = 31,368.73

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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.