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Finding the Fourth Proportional to 113,009.88, 169,417.62 and 42,939.48

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Solution

The fourth proportional to 113,009.88, 169,417.62 and 42,939.48 is: 64,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,009.88 : 169,417.62 = 42,939.48 : x
  2. Step 2: Convert to fraction form
    113,009.88/169,417.62 = 42,939.48/x
  3. Step 3: Cross multiply
    113,009.88x = 169,417.62 × 42,939.48
  4. Step 4: Simplify right side
    113,009.88x = 7,274,704,505.64
  5. Step 5: Solve for x
    x = 7,274,704,505.64/113,009.88
  6. Step 6: Final answer
    x = 64,372.29

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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.