Home / 77,990.27-107,631.50-43,986.35

Finding the Fourth Proportional to 77,990.27, 107,631.50 and 43,986.35

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Solution

The fourth proportional to 77,990.27, 107,631.50 and 43,986.35 is: 60,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,990.27 : 107,631.50 = 43,986.35 : x
  2. Step 2: Convert to fraction form
    77,990.27/107,631.50 = 43,986.35/x
  3. Step 3: Cross multiply
    77,990.27x = 107,631.50 × 43,986.35
  4. Step 4: Simplify right side
    77,990.27x = 4,734,316,989.14
  5. Step 5: Solve for x
    x = 4,734,316,989.14/77,990.27
  6. Step 6: Final answer
    x = 60,703.94

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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.