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Finding the Fourth Proportional to 60,429.60, 90,601.20 and 27,122.40

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Solution

The fourth proportional to 60,429.60, 90,601.20 and 27,122.40 is: 40,664.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,429.60 : 90,601.20 = 27,122.40 : x
  2. Step 2: Convert to fraction form
    60,429.60/90,601.20 = 27,122.40/x
  3. Step 3: Cross multiply
    60,429.60x = 90,601.20 × 27,122.40
  4. Step 4: Simplify right side
    60,429.60x = 2,457,321,986.88
  5. Step 5: Solve for x
    x = 2,457,321,986.88/60,429.60
  6. Step 6: Final answer
    x = 40,664.21

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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.