Home / 86,578.56-129,897-42,197.04

Finding the Fourth Proportional to 86,578.56, 129,897 and 42,197.04

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Solution

The fourth proportional to 86,578.56, 129,897 and 42,197.04 is: 63,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,578.56 : 129,897 = 42,197.04 : x
  2. Step 2: Convert to fraction form
    86,578.56/129,897 = 42,197.04/x
  3. Step 3: Cross multiply
    86,578.56x = 129,897 × 42,197.04
  4. Step 4: Simplify right side
    86,578.56x = 5,481,268,904.88
  5. Step 5: Solve for x
    x = 5,481,268,904.88/86,578.56
  6. Step 6: Final answer
    x = 63,309.77

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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.