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Finding the Fourth Proportional to 40,586.56, 60,880 and 12,506.40

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Solution

The fourth proportional to 40,586.56, 60,880 and 12,506.40 is: 18,759.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,586.56 : 60,880 = 12,506.40 : x
  2. Step 2: Convert to fraction form
    40,586.56/60,880 = 12,506.40/x
  3. Step 3: Cross multiply
    40,586.56x = 60,880 × 12,506.40
  4. Step 4: Simplify right side
    40,586.56x = 761,389,632
  5. Step 5: Solve for x
    x = 761,389,632/40,586.56
  6. Step 6: Final answer
    x = 18,759.65

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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.