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Finding the Fourth Proportional to 86,709.09, 130,063.69 and 24,379.59

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Solution

The fourth proportional to 86,709.09, 130,063.69 and 24,379.59 is: 36,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,709.09 : 130,063.69 = 24,379.59 : x
  2. Step 2: Convert to fraction form
    86,709.09/130,063.69 = 24,379.59/x
  3. Step 3: Cross multiply
    86,709.09x = 130,063.69 × 24,379.59
  4. Step 4: Simplify right side
    86,709.09x = 3,170,899,954.30
  5. Step 5: Solve for x
    x = 3,170,899,954.30/86,709.09
  6. Step 6: Final answer
    x = 36,569.40

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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.