Home / 86,175.16-129,321.09-30,015.77

Finding the Fourth Proportional to 86,175.16, 129,321.09 and 30,015.77

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Solution

The fourth proportional to 86,175.16, 129,321.09 and 30,015.77 is: 45,043.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,175.16 : 129,321.09 = 30,015.77 : x
  2. Step 2: Convert to fraction form
    86,175.16/129,321.09 = 30,015.77/x
  3. Step 3: Cross multiply
    86,175.16x = 129,321.09 × 30,015.77
  4. Step 4: Simplify right side
    86,175.16x = 3,881,671,446.98
  5. Step 5: Solve for x
    x = 3,881,671,446.98/86,175.16
  6. Step 6: Final answer
    x = 45,043.97

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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.