Home / 89,985.78-124,140.33-52,239.78

Finding the Fourth Proportional to 89,985.78, 124,140.33 and 52,239.78

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Solution

The fourth proportional to 89,985.78, 124,140.33 and 52,239.78 is: 72,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,985.78 : 124,140.33 = 52,239.78 : x
  2. Step 2: Convert to fraction form
    89,985.78/124,140.33 = 52,239.78/x
  3. Step 3: Cross multiply
    89,985.78x = 124,140.33 × 52,239.78
  4. Step 4: Simplify right side
    89,985.78x = 6,485,063,528.33
  5. Step 5: Solve for x
    x = 6,485,063,528.33/89,985.78
  6. Step 6: Final answer
    x = 72,067.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.