Home / 71,891.51-99,208.94-39,186.18

Finding the Fourth Proportional to 71,891.51, 99,208.94 and 39,186.18

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Solution

The fourth proportional to 71,891.51, 99,208.94 and 39,186.18 is: 54,076.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,891.51 : 99,208.94 = 39,186.18 : x
  2. Step 2: Convert to fraction form
    71,891.51/99,208.94 = 39,186.18/x
  3. Step 3: Cross multiply
    71,891.51x = 99,208.94 × 39,186.18
  4. Step 4: Simplify right side
    71,891.51x = 3,887,619,184.52
  5. Step 5: Solve for x
    x = 3,887,619,184.52/71,891.51
  6. Step 6: Final answer
    x = 54,076.20

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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.