Home / 77,805.07-107,145.01-67,591.44

Finding the Fourth Proportional to 77,805.07, 107,145.01 and 67,591.44

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Solution

The fourth proportional to 77,805.07, 107,145.01 and 67,591.44 is: 93,079.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,805.07 : 107,145.01 = 67,591.44 : x
  2. Step 2: Convert to fraction form
    77,805.07/107,145.01 = 67,591.44/x
  3. Step 3: Cross multiply
    77,805.07x = 107,145.01 × 67,591.44
  4. Step 4: Simplify right side
    77,805.07x = 7,242,085,345.74
  5. Step 5: Solve for x
    x = 7,242,085,345.74/77,805.07
  6. Step 6: Final answer
    x = 93,079.87

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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.