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Finding the Fourth Proportional to 81,582.99, 112,578.54 and 45,286.54

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Solution

The fourth proportional to 81,582.99, 112,578.54 and 45,286.54 is: 62,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.99 : 112,578.54 = 45,286.54 : x
  2. Step 2: Convert to fraction form
    81,582.99/112,578.54 = 45,286.54/x
  3. Step 3: Cross multiply
    81,582.99x = 112,578.54 × 45,286.54
  4. Step 4: Simplify right side
    81,582.99x = 5,098,292,358.32
  5. Step 5: Solve for x
    x = 5,098,292,358.32/81,582.99
  6. Step 6: Final answer
    x = 62,492.10

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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.