Home / 91,143.32-125,784-50,864.85

Finding the Fourth Proportional to 91,143.32, 125,784 and 50,864.85

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Solution

The fourth proportional to 91,143.32, 125,784 and 50,864.85 is: 70,196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,143.32 : 125,784 = 50,864.85 : x
  2. Step 2: Convert to fraction form
    91,143.32/125,784 = 50,864.85/x
  3. Step 3: Cross multiply
    91,143.32x = 125,784 × 50,864.85
  4. Step 4: Simplify right side
    91,143.32x = 6,397,984,292.40
  5. Step 5: Solve for x
    x = 6,397,984,292.40/91,143.32
  6. Step 6: Final answer
    x = 70,196.97

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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.