Home / 86,621.98-129,828.32-42,182.14

Finding the Fourth Proportional to 86,621.98, 129,828.32 and 42,182.14

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Solution

The fourth proportional to 86,621.98, 129,828.32 and 42,182.14 is: 63,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,621.98 : 129,828.32 = 42,182.14 : x
  2. Step 2: Convert to fraction form
    86,621.98/129,828.32 = 42,182.14/x
  3. Step 3: Cross multiply
    86,621.98x = 129,828.32 × 42,182.14
  4. Step 4: Simplify right side
    86,621.98x = 5,476,436,370.20
  5. Step 5: Solve for x
    x = 5,476,436,370.20/86,621.98
  6. Step 6: Final answer
    x = 63,222.25

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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.