Home / 85,786.86-118,238.01-57,055.14

Finding the Fourth Proportional to 85,786.86, 118,238.01 and 57,055.14

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Solution

The fourth proportional to 85,786.86, 118,238.01 and 57,055.14 is: 78,637.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,786.86 : 118,238.01 = 57,055.14 : x
  2. Step 2: Convert to fraction form
    85,786.86/118,238.01 = 57,055.14/x
  3. Step 3: Cross multiply
    85,786.86x = 118,238.01 × 57,055.14
  4. Step 4: Simplify right side
    85,786.86x = 6,746,086,213.87
  5. Step 5: Solve for x
    x = 6,746,086,213.87/85,786.86
  6. Step 6: Final answer
    x = 78,637.76

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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.