Home / 92,821.14-128,089.74-50,378.76

Finding the Fourth Proportional to 92,821.14, 128,089.74 and 50,378.76

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Solution

The fourth proportional to 92,821.14, 128,089.74 and 50,378.76 is: 69,520.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,821.14 : 128,089.74 = 50,378.76 : x
  2. Step 2: Convert to fraction form
    92,821.14/128,089.74 = 50,378.76/x
  3. Step 3: Cross multiply
    92,821.14x = 128,089.74 × 50,378.76
  4. Step 4: Simplify right side
    92,821.14x = 6,453,002,269.92
  5. Step 5: Solve for x
    x = 6,453,002,269.92/92,821.14
  6. Step 6: Final answer
    x = 69,520.83

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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.