Home / 66,021.12-91,053.72-43,342.74

Finding the Fourth Proportional to 66,021.12, 91,053.72 and 43,342.74

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Solution

The fourth proportional to 66,021.12, 91,053.72 and 43,342.74 is: 59,776.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.12 : 91,053.72 = 43,342.74 : x
  2. Step 2: Convert to fraction form
    66,021.12/91,053.72 = 43,342.74/x
  3. Step 3: Cross multiply
    66,021.12x = 91,053.72 × 43,342.74
  4. Step 4: Simplify right side
    66,021.12x = 3,946,517,711.99
  5. Step 5: Solve for x
    x = 3,946,517,711.99/66,021.12
  6. Step 6: Final answer
    x = 59,776.59

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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.