Home / 71,960.39-99,307.39-40,131.34

Finding the Fourth Proportional to 71,960.39, 99,307.39 and 40,131.34

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Solution

The fourth proportional to 71,960.39, 99,307.39 and 40,131.34 is: 55,382.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,960.39 : 99,307.39 = 40,131.34 : x
  2. Step 2: Convert to fraction form
    71,960.39/99,307.39 = 40,131.34/x
  3. Step 3: Cross multiply
    71,960.39x = 99,307.39 × 40,131.34
  4. Step 4: Simplify right side
    71,960.39x = 3,985,338,284.01
  5. Step 5: Solve for x
    x = 3,985,338,284.01/71,960.39
  6. Step 6: Final answer
    x = 55,382.39

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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.