Home / 47,115.12-64,997.19-28,949.36

Finding the Fourth Proportional to 47,115.12, 64,997.19 and 28,949.36

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Solution

The fourth proportional to 47,115.12, 64,997.19 and 28,949.36 is: 39,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,115.12 : 64,997.19 = 28,949.36 : x
  2. Step 2: Convert to fraction form
    47,115.12/64,997.19 = 28,949.36/x
  3. Step 3: Cross multiply
    47,115.12x = 64,997.19 × 28,949.36
  4. Step 4: Simplify right side
    47,115.12x = 1,881,626,727.31
  5. Step 5: Solve for x
    x = 1,881,626,727.31/47,115.12
  6. Step 6: Final answer
    x = 39,936.79

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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.