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Finding the Fourth Proportional to 86,859.42, 119,864.86 and 49,133.67

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Solution

The fourth proportional to 86,859.42, 119,864.86 and 49,133.67 is: 67,803.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,859.42 : 119,864.86 = 49,133.67 : x
  2. Step 2: Convert to fraction form
    86,859.42/119,864.86 = 49,133.67/x
  3. Step 3: Cross multiply
    86,859.42x = 119,864.86 × 49,133.67
  4. Step 4: Simplify right side
    86,859.42x = 5,889,400,230.17
  5. Step 5: Solve for x
    x = 5,889,400,230.17/86,859.42
  6. Step 6: Final answer
    x = 67,803.82

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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.