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Finding the Fourth Proportional to 68,159.48, 94,051.62 and 39,478.77

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Solution

The fourth proportional to 68,159.48, 94,051.62 and 39,478.77 is: 54,475.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,159.48 : 94,051.62 = 39,478.77 : x
  2. Step 2: Convert to fraction form
    68,159.48/94,051.62 = 39,478.77/x
  3. Step 3: Cross multiply
    68,159.48x = 94,051.62 × 39,478.77
  4. Step 4: Simplify right side
    68,159.48x = 3,713,042,274.11
  5. Step 5: Solve for x
    x = 3,713,042,274.11/68,159.48
  6. Step 6: Final answer
    x = 54,475.81

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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.