Home / 47,986.81-66,208.51-30,991.77

Finding the Fourth Proportional to 47,986.81, 66,208.51 and 30,991.77

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Solution

The fourth proportional to 47,986.81, 66,208.51 and 30,991.77 is: 42,760.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,986.81 : 66,208.51 = 30,991.77 : x
  2. Step 2: Convert to fraction form
    47,986.81/66,208.51 = 30,991.77/x
  3. Step 3: Cross multiply
    47,986.81x = 66,208.51 × 30,991.77
  4. Step 4: Simplify right side
    47,986.81x = 2,051,918,913.96
  5. Step 5: Solve for x
    x = 2,051,918,913.96/47,986.81
  6. Step 6: Final answer
    x = 42,760.06

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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.