Home / 92,811.12-128,079.41-50,369.65

Finding the Fourth Proportional to 92,811.12, 128,079.41 and 50,369.65

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Solution

The fourth proportional to 92,811.12, 128,079.41 and 50,369.65 is: 69,510.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,811.12 : 128,079.41 = 50,369.65 : x
  2. Step 2: Convert to fraction form
    92,811.12/128,079.41 = 50,369.65/x
  3. Step 3: Cross multiply
    92,811.12x = 128,079.41 × 50,369.65
  4. Step 4: Simplify right side
    92,811.12x = 6,451,315,053.91
  5. Step 5: Solve for x
    x = 6,451,315,053.91/92,811.12
  6. Step 6: Final answer
    x = 69,510.15

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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.