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Finding the Fourth Proportional to 81,369.20, 112,284.12 and 45,558.88

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Solution

The fourth proportional to 81,369.20, 112,284.12 and 45,558.88 is: 62,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,369.20 : 112,284.12 = 45,558.88 : x
  2. Step 2: Convert to fraction form
    81,369.20/112,284.12 = 45,558.88/x
  3. Step 3: Cross multiply
    81,369.20x = 112,284.12 × 45,558.88
  4. Step 4: Simplify right side
    81,369.20x = 5,115,538,748.99
  5. Step 5: Solve for x
    x = 5,115,538,748.99/81,369.20
  6. Step 6: Final answer
    x = 62,868.24

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1.5x scale

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.