Home / 86,856.68-119,864.94-49,128.50

Finding the Fourth Proportional to 86,856.68, 119,864.94 and 49,128.50

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Solution

The fourth proportional to 86,856.68, 119,864.94 and 49,128.50 is: 67,798.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,856.68 : 119,864.94 = 49,128.50 : x
  2. Step 2: Convert to fraction form
    86,856.68/119,864.94 = 49,128.50/x
  3. Step 3: Cross multiply
    86,856.68x = 119,864.94 × 49,128.50
  4. Step 4: Simplify right side
    86,856.68x = 5,888,784,704.79
  5. Step 5: Solve for x
    x = 5,888,784,704.79/86,856.68
  6. Step 6: Final answer
    x = 67,798.87

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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.