Home / 89,992.08-124,242.12-61,739.28

Finding the Fourth Proportional to 89,992.08, 124,242.12 and 61,739.28

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Solution

The fourth proportional to 89,992.08, 124,242.12 and 61,739.28 is: 85,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,992.08 : 124,242.12 = 61,739.28 : x
  2. Step 2: Convert to fraction form
    89,992.08/124,242.12 = 61,739.28/x
  3. Step 3: Cross multiply
    89,992.08x = 124,242.12 × 61,739.28
  4. Step 4: Simplify right side
    89,992.08x = 7,670,619,034.47
  5. Step 5: Solve for x
    x = 7,670,619,034.47/89,992.08
  6. Step 6: Final answer
    x = 85,236.60

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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.