Home / 86,211.51-129,320.91-30,057.24

Finding the Fourth Proportional to 86,211.51, 129,320.91 and 30,057.24

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Solution

The fourth proportional to 86,211.51, 129,320.91 and 30,057.24 is: 45,087.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,211.51 : 129,320.91 = 30,057.24 : x
  2. Step 2: Convert to fraction form
    86,211.51/129,320.91 = 30,057.24/x
  3. Step 3: Cross multiply
    86,211.51x = 129,320.91 × 30,057.24
  4. Step 4: Simplify right side
    86,211.51x = 3,887,029,628.89
  5. Step 5: Solve for x
    x = 3,887,029,628.89/86,211.51
  6. Step 6: Final answer
    x = 45,087.13

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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.