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Finding the Fourth Proportional to 83,383.59, 115,069.53 and 45,143.54

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Solution

The fourth proportional to 83,383.59, 115,069.53 and 45,143.54 is: 62,298.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,383.59 : 115,069.53 = 45,143.54 : x
  2. Step 2: Convert to fraction form
    83,383.59/115,069.53 = 45,143.54/x
  3. Step 3: Cross multiply
    83,383.59x = 115,069.53 × 45,143.54
  4. Step 4: Simplify right side
    83,383.59x = 5,194,645,354.99
  5. Step 5: Solve for x
    x = 5,194,645,354.99/83,383.59
  6. Step 6: Final answer
    x = 62,298.17

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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.