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Finding the Fourth Proportional to 86,732.66, 130,010.36 and 49,213.47

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Solution

The fourth proportional to 86,732.66, 130,010.36 and 49,213.47 is: 73,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,732.66 : 130,010.36 = 49,213.47 : x
  2. Step 2: Convert to fraction form
    86,732.66/130,010.36 = 49,213.47/x
  3. Step 3: Cross multiply
    86,732.66x = 130,010.36 × 49,213.47
  4. Step 4: Simplify right side
    86,732.66x = 6,398,261,074.58
  5. Step 5: Solve for x
    x = 6,398,261,074.58/86,732.66
  6. Step 6: Final answer
    x = 73,769.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.