Home / 86,996.47-120,053.09-51,188.80

Finding the Fourth Proportional to 86,996.47, 120,053.09 and 51,188.80

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Solution

The fourth proportional to 86,996.47, 120,053.09 and 51,188.80 is: 70,639.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,996.47 : 120,053.09 = 51,188.80 : x
  2. Step 2: Convert to fraction form
    86,996.47/120,053.09 = 51,188.80/x
  3. Step 3: Cross multiply
    86,996.47x = 120,053.09 × 51,188.80
  4. Step 4: Simplify right side
    86,996.47x = 6,145,373,357.45
  5. Step 5: Solve for x
    x = 6,145,373,357.45/86,996.47
  6. Step 6: Final answer
    x = 70,639.34

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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.