Home / 71,975.49-99,326.31-40,146.45

Finding the Fourth Proportional to 71,975.49, 99,326.31 and 40,146.45

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Solution

The fourth proportional to 71,975.49, 99,326.31 and 40,146.45 is: 55,402.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.49 : 99,326.31 = 40,146.45 : x
  2. Step 2: Convert to fraction form
    71,975.49/99,326.31 = 40,146.45/x
  3. Step 3: Cross multiply
    71,975.49x = 99,326.31 × 40,146.45
  4. Step 4: Simplify right side
    71,975.49x = 3,987,598,738.10
  5. Step 5: Solve for x
    x = 3,987,598,738.10/71,975.49
  6. Step 6: Final answer
    x = 55,402.18

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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.