Home / 66,135.88-99,119.46-30,998.12

Finding the Fourth Proportional to 66,135.88, 99,119.46 and 30,998.12

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Solution

The fourth proportional to 66,135.88, 99,119.46 and 30,998.12 is: 46,457.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,135.88 : 99,119.46 = 30,998.12 : x
  2. Step 2: Convert to fraction form
    66,135.88/99,119.46 = 30,998.12/x
  3. Step 3: Cross multiply
    66,135.88x = 99,119.46 × 30,998.12
  4. Step 4: Simplify right side
    66,135.88x = 3,072,516,915.42
  5. Step 5: Solve for x
    x = 3,072,516,915.42/66,135.88
  6. Step 6: Final answer
    x = 46,457.64

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1.5x scale

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.