Home / 77,536.80-115,684.83-69,117.12

Finding the Fourth Proportional to 77,536.80, 115,684.83 and 69,117.12

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Solution

The fourth proportional to 77,536.80, 115,684.83 and 69,117.12 is: 103,122.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,536.80 : 115,684.83 = 69,117.12 : x
  2. Step 2: Convert to fraction form
    77,536.80/115,684.83 = 69,117.12/x
  3. Step 3: Cross multiply
    77,536.80x = 115,684.83 × 69,117.12
  4. Step 4: Simplify right side
    77,536.80x = 7,995,802,277.29
  5. Step 5: Solve for x
    x = 7,995,802,277.29/77,536.80
  6. Step 6: Final answer
    x = 103,122.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.