Home / 89,711.12-134,569.85-30,539.09

Finding the Fourth Proportional to 89,711.12, 134,569.85 and 30,539.09

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Solution

The fourth proportional to 89,711.12, 134,569.85 and 30,539.09 is: 45,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,711.12 : 134,569.85 = 30,539.09 : x
  2. Step 2: Convert to fraction form
    89,711.12/134,569.85 = 30,539.09/x
  3. Step 3: Cross multiply
    89,711.12x = 134,569.85 × 30,539.09
  4. Step 4: Simplify right side
    89,711.12x = 4,109,639,934.89
  5. Step 5: Solve for x
    x = 4,109,639,934.89/89,711.12
  6. Step 6: Final answer
    x = 45,809.71

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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.