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Finding the Fourth Proportional to 104,940.30, 157,429.65 and 42,617.10

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Solution

The fourth proportional to 104,940.30, 157,429.65 and 42,617.10 is: 63,933.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,940.30 : 157,429.65 = 42,617.10 : x
  2. Step 2: Convert to fraction form
    104,940.30/157,429.65 = 42,617.10/x
  3. Step 3: Cross multiply
    104,940.30x = 157,429.65 × 42,617.10
  4. Step 4: Simplify right side
    104,940.30x = 6,709,195,137.02
  5. Step 5: Solve for x
    x = 6,709,195,137.02/104,940.30
  6. Step 6: Final answer
    x = 63,933.45

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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.