Home / 91,922.64-137,913.66-45,142.70

Finding the Fourth Proportional to 91,922.64, 137,913.66 and 45,142.70

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Solution

The fourth proportional to 91,922.64, 137,913.66 and 45,142.70 is: 67,728.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,922.64 : 137,913.66 = 45,142.70 : x
  2. Step 2: Convert to fraction form
    91,922.64/137,913.66 = 45,142.70/x
  3. Step 3: Cross multiply
    91,922.64x = 137,913.66 × 45,142.70
  4. Step 4: Simplify right side
    91,922.64x = 6,225,794,979.28
  5. Step 5: Solve for x
    x = 6,225,794,979.28/91,922.64
  6. Step 6: Final answer
    x = 67,728.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.