Home / 66,636.18-91,898.40-55,287.71

Finding the Fourth Proportional to 66,636.18, 91,898.40 and 55,287.71

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Solution

The fourth proportional to 66,636.18, 91,898.40 and 55,287.71 is: 76,247.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,636.18 : 91,898.40 = 55,287.71 : x
  2. Step 2: Convert to fraction form
    66,636.18/91,898.40 = 55,287.71/x
  3. Step 3: Cross multiply
    66,636.18x = 91,898.40 × 55,287.71
  4. Step 4: Simplify right side
    66,636.18x = 5,080,851,629.17
  5. Step 5: Solve for x
    x = 5,080,851,629.17/66,636.18
  6. Step 6: Final answer
    x = 76,247.64

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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.