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Finding the Fourth Proportional to 113,008.40, 169,446 and 42,892.64

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Solution

The fourth proportional to 113,008.40, 169,446 and 42,892.64 is: 64,313.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,008.40 : 169,446 = 42,892.64 : x
  2. Step 2: Convert to fraction form
    113,008.40/169,446 = 42,892.64/x
  3. Step 3: Cross multiply
    113,008.40x = 169,446 × 42,892.64
  4. Step 4: Simplify right side
    113,008.40x = 7,267,986,277.44
  5. Step 5: Solve for x
    x = 7,267,986,277.44/113,008.40
  6. Step 6: Final answer
    x = 64,313.68

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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.