Home / 86,539.68-119,383.80-56,313.97

Finding the Fourth Proportional to 86,539.68, 119,383.80 and 56,313.97

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Solution

The fourth proportional to 86,539.68, 119,383.80 and 56,313.97 is: 77,686.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,539.68 : 119,383.80 = 56,313.97 : x
  2. Step 2: Convert to fraction form
    86,539.68/119,383.80 = 56,313.97/x
  3. Step 3: Cross multiply
    86,539.68x = 119,383.80 × 56,313.97
  4. Step 4: Simplify right side
    86,539.68x = 6,722,975,731.69
  5. Step 5: Solve for x
    x = 6,722,975,731.69/86,539.68
  6. Step 6: Final answer
    x = 77,686.63

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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.