Home / 66,142.09-91,273.50-39,283.91

Finding the Fourth Proportional to 66,142.09, 91,273.50 and 39,283.91

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Solution

The fourth proportional to 66,142.09, 91,273.50 and 39,283.91 is: 54,210.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,142.09 : 91,273.50 = 39,283.91 : x
  2. Step 2: Convert to fraction form
    66,142.09/91,273.50 = 39,283.91/x
  3. Step 3: Cross multiply
    66,142.09x = 91,273.50 × 39,283.91
  4. Step 4: Simplify right side
    66,142.09x = 3,585,579,959.39
  5. Step 5: Solve for x
    x = 3,585,579,959.39/66,142.09
  6. Step 6: Final answer
    x = 54,210.26

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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.