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Finding the Fourth Proportional to 86,024.85, 128,891.62 and 52,675.26

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Solution

The fourth proportional to 86,024.85, 128,891.62 and 52,675.26 is: 78,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,024.85 : 128,891.62 = 52,675.26 : x
  2. Step 2: Convert to fraction form
    86,024.85/128,891.62 = 52,675.26/x
  3. Step 3: Cross multiply
    86,024.85x = 128,891.62 × 52,675.26
  4. Step 4: Simplify right side
    86,024.85x = 6,789,399,595.32
  5. Step 5: Solve for x
    x = 6,789,399,595.32/86,024.85
  6. Step 6: Final answer
    x = 78,923.70

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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.