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Finding the Fourth Proportional to 86,062.68, 118,775.76 and 52,089.86

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Solution

The fourth proportional to 86,062.68, 118,775.76 and 52,089.86 is: 71,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,062.68 : 118,775.76 = 52,089.86 : x
  2. Step 2: Convert to fraction form
    86,062.68/118,775.76 = 52,089.86/x
  3. Step 3: Cross multiply
    86,062.68x = 118,775.76 × 52,089.86
  4. Step 4: Simplify right side
    86,062.68x = 6,187,012,709.79
  5. Step 5: Solve for x
    x = 6,187,012,709.79/86,062.68
  6. Step 6: Final answer
    x = 71,889.61

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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.