Home / 86,554.17-129,888-30,392.82

Finding the Fourth Proportional to 86,554.17, 129,888 and 30,392.82

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Solution

The fourth proportional to 86,554.17, 129,888 and 30,392.82 is: 45,609.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,554.17 : 129,888 = 30,392.82 : x
  2. Step 2: Convert to fraction form
    86,554.17/129,888 = 30,392.82/x
  3. Step 3: Cross multiply
    86,554.17x = 129,888 × 30,392.82
  4. Step 4: Simplify right side
    86,554.17x = 3,947,662,604.16
  5. Step 5: Solve for x
    x = 3,947,662,604.16/86,554.17
  6. Step 6: Final answer
    x = 45,609.16

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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.