Home / 77,116.50-115,683.93-27,186.21

Finding the Fourth Proportional to 77,116.50, 115,683.93 and 27,186.21

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Solution

The fourth proportional to 77,116.50, 115,683.93 and 27,186.21 is: 40,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,116.50 : 115,683.93 = 27,186.21 : x
  2. Step 2: Convert to fraction form
    77,116.50/115,683.93 = 27,186.21/x
  3. Step 3: Cross multiply
    77,116.50x = 115,683.93 × 27,186.21
  4. Step 4: Simplify right side
    77,116.50x = 3,145,007,614.61
  5. Step 5: Solve for x
    x = 3,145,007,614.61/77,116.50
  6. Step 6: Final answer
    x = 40,782.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.