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Finding the Fourth Proportional to 81,423.54, 112,369.09 and 45,625.08

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Solution

The fourth proportional to 81,423.54, 112,369.09 and 45,625.08 is: 62,965.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,423.54 : 112,369.09 = 45,625.08 : x
  2. Step 2: Convert to fraction form
    81,423.54/112,369.09 = 45,625.08/x
  3. Step 3: Cross multiply
    81,423.54x = 112,369.09 × 45,625.08
  4. Step 4: Simplify right side
    81,423.54x = 5,126,848,720.78
  5. Step 5: Solve for x
    x = 5,126,848,720.78/81,423.54
  6. Step 6: Final answer
    x = 62,965.19

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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.