Home / 77,988.06-107,525.88-65,085.84

Finding the Fourth Proportional to 77,988.06, 107,525.88 and 65,085.84

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Solution

The fourth proportional to 77,988.06, 107,525.88 and 65,085.84 is: 89,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,988.06 : 107,525.88 = 65,085.84 : x
  2. Step 2: Convert to fraction form
    77,988.06/107,525.88 = 65,085.84/x
  3. Step 3: Cross multiply
    77,988.06x = 107,525.88 × 65,085.84
  4. Step 4: Simplify right side
    77,988.06x = 6,998,412,221.54
  5. Step 5: Solve for x
    x = 6,998,412,221.54/77,988.06
  6. Step 6: Final answer
    x = 89,736.97

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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.