Home / 77,186.70-115,772.22-52,386.12

Finding the Fourth Proportional to 77,186.70, 115,772.22 and 52,386.12

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Solution

The fourth proportional to 77,186.70, 115,772.22 and 52,386.12 is: 78,573.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,186.70 : 115,772.22 = 52,386.12 : x
  2. Step 2: Convert to fraction form
    77,186.70/115,772.22 = 52,386.12/x
  3. Step 3: Cross multiply
    77,186.70x = 115,772.22 × 52,386.12
  4. Step 4: Simplify right side
    77,186.70x = 6,064,857,409.59
  5. Step 5: Solve for x
    x = 6,064,857,409.59/77,186.70
  6. Step 6: Final answer
    x = 78,573.87

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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.