Home / 77,992.08-107,629.05-42,182.07

Finding the Fourth Proportional to 77,992.08, 107,629.05 and 42,182.07

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Solution

The fourth proportional to 77,992.08, 107,629.05 and 42,182.07 is: 58,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,992.08 : 107,629.05 = 42,182.07 : x
  2. Step 2: Convert to fraction form
    77,992.08/107,629.05 = 42,182.07/x
  3. Step 3: Cross multiply
    77,992.08x = 107,629.05 × 42,182.07
  4. Step 4: Simplify right side
    77,992.08x = 4,540,016,121.13
  5. Step 5: Solve for x
    x = 4,540,016,121.13/77,992.08
  6. Step 6: Final answer
    x = 58,211.25

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1.5x scale

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.