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Finding the Fourth Proportional to 86,626.72, 130,114.80 and 51,634.72

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Solution

The fourth proportional to 86,626.72, 130,114.80 and 51,634.72 is: 77,556.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,626.72 : 130,114.80 = 51,634.72 : x
  2. Step 2: Convert to fraction form
    86,626.72/130,114.80 = 51,634.72/x
  3. Step 3: Cross multiply
    86,626.72x = 130,114.80 × 51,634.72
  4. Step 4: Simplify right side
    86,626.72x = 6,718,441,265.86
  5. Step 5: Solve for x
    x = 6,718,441,265.86/86,626.72
  6. Step 6: Final answer
    x = 77,556.22

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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.