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Finding the Fourth Proportional to 101,940.63, 140,678.96 and 59,490.87

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Solution

The fourth proportional to 101,940.63, 140,678.96 and 59,490.87 is: 82,097.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,940.63 : 140,678.96 = 59,490.87 : x
  2. Step 2: Convert to fraction form
    101,940.63/140,678.96 = 59,490.87/x
  3. Step 3: Cross multiply
    101,940.63x = 140,678.96 × 59,490.87
  4. Step 4: Simplify right side
    101,940.63x = 8,369,113,423.64
  5. Step 5: Solve for x
    x = 8,369,113,423.64/101,940.63
  6. Step 6: Final answer
    x = 82,097.92

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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.