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Finding the Fourth Proportional to 86,311.79, 119,177.84 and 67,502.51

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Solution

The fourth proportional to 86,311.79, 119,177.84 and 67,502.51 is: 93,206.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,311.79 : 119,177.84 = 67,502.51 : x
  2. Step 2: Convert to fraction form
    86,311.79/119,177.84 = 67,502.51/x
  3. Step 3: Cross multiply
    86,311.79x = 119,177.84 × 67,502.51
  4. Step 4: Simplify right side
    86,311.79x = 8,044,803,336.38
  5. Step 5: Solve for x
    x = 8,044,803,336.38/86,311.79
  6. Step 6: Final answer
    x = 93,206.31

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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.