Home / 66,145.03-99,231.21-21,774.45

Finding the Fourth Proportional to 66,145.03, 99,231.21 and 21,774.45

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Solution

The fourth proportional to 66,145.03, 99,231.21 and 21,774.45 is: 32,666.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.03 : 99,231.21 = 21,774.45 : x
  2. Step 2: Convert to fraction form
    66,145.03/99,231.21 = 21,774.45/x
  3. Step 3: Cross multiply
    66,145.03x = 99,231.21 × 21,774.45
  4. Step 4: Simplify right side
    66,145.03x = 2,160,705,020.58
  5. Step 5: Solve for x
    x = 2,160,705,020.58/66,145.03
  6. Step 6: Final answer
    x = 32,666.17

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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.