Home / 66,331.02-91,521.99-55,619.22

Finding the Fourth Proportional to 66,331.02, 91,521.99 and 55,619.22

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Solution

The fourth proportional to 66,331.02, 91,521.99 and 55,619.22 is: 76,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,331.02 : 91,521.99 = 55,619.22 : x
  2. Step 2: Convert to fraction form
    66,331.02/91,521.99 = 55,619.22/x
  3. Step 3: Cross multiply
    66,331.02x = 91,521.99 × 55,619.22
  4. Step 4: Simplify right side
    66,331.02x = 5,090,381,696.65
  5. Step 5: Solve for x
    x = 5,090,381,696.65/66,331.02
  6. Step 6: Final answer
    x = 76,742.10

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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.