Home / 66,221.32-99,331.98-19,474.60

Finding the Fourth Proportional to 66,221.32, 99,331.98 and 19,474.60

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Solution

The fourth proportional to 66,221.32, 99,331.98 and 19,474.60 is: 29,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,221.32 : 99,331.98 = 19,474.60 : x
  2. Step 2: Convert to fraction form
    66,221.32/99,331.98 = 19,474.60/x
  3. Step 3: Cross multiply
    66,221.32x = 99,331.98 × 19,474.60
  4. Step 4: Simplify right side
    66,221.32x = 1,934,450,577.71
  5. Step 5: Solve for x
    x = 1,934,450,577.71/66,221.32
  6. Step 6: Final answer
    x = 29,211.90

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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.