Home / 66,619.49-99,927.84-21,640.80

Finding the Fourth Proportional to 66,619.49, 99,927.84 and 21,640.80

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Solution

The fourth proportional to 66,619.49, 99,927.84 and 21,640.80 is: 32,460.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,619.49 : 99,927.84 = 21,640.80 : x
  2. Step 2: Convert to fraction form
    66,619.49/99,927.84 = 21,640.80/x
  3. Step 3: Cross multiply
    66,619.49x = 99,927.84 × 21,640.80
  4. Step 4: Simplify right side
    66,619.49x = 2,162,518,399.87
  5. Step 5: Solve for x
    x = 2,162,518,399.87/66,619.49
  6. Step 6: Final answer
    x = 32,460.75

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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.