Home / 66,021.12-91,048.32-61,251.84

Finding the Fourth Proportional to 66,021.12, 91,048.32 and 61,251.84

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Solution

The fourth proportional to 66,021.12, 91,048.32 and 61,251.84 is: 84,471.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.12 : 91,048.32 = 61,251.84 : x
  2. Step 2: Convert to fraction form
    66,021.12/91,048.32 = 61,251.84/x
  3. Step 3: Cross multiply
    66,021.12x = 91,048.32 × 61,251.84
  4. Step 4: Simplify right side
    66,021.12x = 5,576,877,128.91
  5. Step 5: Solve for x
    x = 5,576,877,128.91/66,021.12
  6. Step 6: Final answer
    x = 84,471.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.