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Finding the Fourth Proportional to 60,861.84, 91,284.23 and 20,880.16

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Solution

The fourth proportional to 60,861.84, 91,284.23 and 20,880.16 is: 31,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,861.84 : 91,284.23 = 20,880.16 : x
  2. Step 2: Convert to fraction form
    60,861.84/91,284.23 = 20,880.16/x
  3. Step 3: Cross multiply
    60,861.84x = 91,284.23 × 20,880.16
  4. Step 4: Simplify right side
    60,861.84x = 1,906,029,327.88
  5. Step 5: Solve for x
    x = 1,906,029,327.88/60,861.84
  6. Step 6: Final answer
    x = 31,317.31

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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.