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Finding the Fourth Proportional to 86,223.36, 129,320.28 and 23,879.28

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Solution

The fourth proportional to 86,223.36, 129,320.28 and 23,879.28 is: 35,814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,223.36 : 129,320.28 = 23,879.28 : x
  2. Step 2: Convert to fraction form
    86,223.36/129,320.28 = 23,879.28/x
  3. Step 3: Cross multiply
    86,223.36x = 129,320.28 × 23,879.28
  4. Step 4: Simplify right side
    86,223.36x = 3,088,075,175.80
  5. Step 5: Solve for x
    x = 3,088,075,175.80/86,223.36
  6. Step 6: Final answer
    x = 35,814.83

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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.