Home / 66,143.37-91,227.84-45,990.15

Finding the Fourth Proportional to 66,143.37, 91,227.84 and 45,990.15

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Solution

The fourth proportional to 66,143.37, 91,227.84 and 45,990.15 is: 63,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.37 : 91,227.84 = 45,990.15 : x
  2. Step 2: Convert to fraction form
    66,143.37/91,227.84 = 45,990.15/x
  3. Step 3: Cross multiply
    66,143.37x = 91,227.84 × 45,990.15
  4. Step 4: Simplify right side
    66,143.37x = 4,195,582,045.78
  5. Step 5: Solve for x
    x = 4,195,582,045.78/66,143.37
  6. Step 6: Final answer
    x = 63,431.63

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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.