Home / 47,790.51-65,969.19-31,869.15

Finding the Fourth Proportional to 47,790.51, 65,969.19 and 31,869.15

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Solution

The fourth proportional to 47,790.51, 65,969.19 and 31,869.15 is: 43,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,790.51 : 65,969.19 = 31,869.15 : x
  2. Step 2: Convert to fraction form
    47,790.51/65,969.19 = 31,869.15/x
  3. Step 3: Cross multiply
    47,790.51x = 65,969.19 × 31,869.15
  4. Step 4: Simplify right side
    47,790.51x = 2,102,382,011.49
  5. Step 5: Solve for x
    x = 2,102,382,011.49/47,790.51
  6. Step 6: Final answer
    x = 43,991.62

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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.