Home / 66,655.37-99,998.85-19,909.46

Finding the Fourth Proportional to 66,655.37, 99,998.85 and 19,909.46

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Solution

The fourth proportional to 66,655.37, 99,998.85 and 19,909.46 is: 29,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,655.37 : 99,998.85 = 19,909.46 : x
  2. Step 2: Convert to fraction form
    66,655.37/99,998.85 = 19,909.46/x
  3. Step 3: Cross multiply
    66,655.37x = 99,998.85 × 19,909.46
  4. Step 4: Simplify right side
    66,655.37x = 1,990,922,604.13
  5. Step 5: Solve for x
    x = 1,990,922,604.13/66,655.37
  6. Step 6: Final answer
    x = 29,868.90

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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.