Home / 47,139.77-65,032.88-39,939.08

Finding the Fourth Proportional to 47,139.77, 65,032.88 and 39,939.08

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Solution

The fourth proportional to 47,139.77, 65,032.88 and 39,939.08 is: 55,098.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,139.77 : 65,032.88 = 39,939.08 : x
  2. Step 2: Convert to fraction form
    47,139.77/65,032.88 = 39,939.08/x
  3. Step 3: Cross multiply
    47,139.77x = 65,032.88 × 39,939.08
  4. Step 4: Simplify right side
    47,139.77x = 2,597,352,872.09
  5. Step 5: Solve for x
    x = 2,597,352,872.09/47,139.77
  6. Step 6: Final answer
    x = 55,098.97

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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.