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Finding the Fourth Proportional to 68,809.88, 94,957.80 and 40,149.24

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Solution

The fourth proportional to 68,809.88, 94,957.80 and 40,149.24 is: 55,406.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,809.88 : 94,957.80 = 40,149.24 : x
  2. Step 2: Convert to fraction form
    68,809.88/94,957.80 = 40,149.24/x
  3. Step 3: Cross multiply
    68,809.88x = 94,957.80 × 40,149.24
  4. Step 4: Simplify right side
    68,809.88x = 3,812,483,502.07
  5. Step 5: Solve for x
    x = 3,812,483,502.07/68,809.88
  6. Step 6: Final answer
    x = 55,406.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.