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Finding the Fourth Proportional to 40,640.16, 60,962.16 and 14,347.68

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Solution

The fourth proportional to 40,640.16, 60,962.16 and 14,347.68 is: 21,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,640.16 : 60,962.16 = 14,347.68 : x
  2. Step 2: Convert to fraction form
    40,640.16/60,962.16 = 14,347.68/x
  3. Step 3: Cross multiply
    40,640.16x = 60,962.16 × 14,347.68
  4. Step 4: Simplify right side
    40,640.16x = 874,665,563.79
  5. Step 5: Solve for x
    x = 874,665,563.79/40,640.16
  6. Step 6: Final answer
    x = 21,522.20

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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.