Home / 76,311.43-105,199.15-53,581.21

Finding the Fourth Proportional to 76,311.43, 105,199.15 and 53,581.21

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Solution

The fourth proportional to 76,311.43, 105,199.15 and 53,581.21 is: 73,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,311.43 : 105,199.15 = 53,581.21 : x
  2. Step 2: Convert to fraction form
    76,311.43/105,199.15 = 53,581.21/x
  3. Step 3: Cross multiply
    76,311.43x = 105,199.15 × 53,581.21
  4. Step 4: Simplify right side
    76,311.43x = 5,636,697,747.97
  5. Step 5: Solve for x
    x = 5,636,697,747.97/76,311.43
  6. Step 6: Final answer
    x = 73,864.40

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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.