Home / 66,330.90-99,481.59-39,999.42

Finding the Fourth Proportional to 66,330.90, 99,481.59 and 39,999.42

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Solution

The fourth proportional to 66,330.90, 99,481.59 and 39,999.42 is: 59,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,330.90 : 99,481.59 = 39,999.42 : x
  2. Step 2: Convert to fraction form
    66,330.90/99,481.59 = 39,999.42/x
  3. Step 3: Cross multiply
    66,330.90x = 99,481.59 × 39,999.42
  4. Step 4: Simplify right side
    66,330.90x = 3,979,205,900.68
  5. Step 5: Solve for x
    x = 3,979,205,900.68/66,330.90
  6. Step 6: Final answer
    x = 59,990.23

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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.