Home / 81,285.96-121,979.70-58,492.14

Finding the Fourth Proportional to 81,285.96, 121,979.70 and 58,492.14

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Solution

The fourth proportional to 81,285.96, 121,979.70 and 58,492.14 is: 87,774.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.96 : 121,979.70 = 58,492.14 : x
  2. Step 2: Convert to fraction form
    81,285.96/121,979.70 = 58,492.14/x
  3. Step 3: Cross multiply
    81,285.96x = 121,979.70 × 58,492.14
  4. Step 4: Simplify right side
    81,285.96x = 7,134,853,689.56
  5. Step 5: Solve for x
    x = 7,134,853,689.56/81,285.96
  6. Step 6: Final answer
    x = 87,774.74

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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.