Home / 66,153.16-99,243.39-21,782.56

Finding the Fourth Proportional to 66,153.16, 99,243.39 and 21,782.56

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Solution

The fourth proportional to 66,153.16, 99,243.39 and 21,782.56 is: 32,678.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,153.16 : 99,243.39 = 21,782.56 : x
  2. Step 2: Convert to fraction form
    66,153.16/99,243.39 = 21,782.56/x
  3. Step 3: Cross multiply
    66,153.16x = 99,243.39 × 21,782.56
  4. Step 4: Simplify right side
    66,153.16x = 2,161,775,097.28
  5. Step 5: Solve for x
    x = 2,161,775,097.28/66,153.16
  6. Step 6: Final answer
    x = 32,678.33

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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.