Home / 81,918.77-113,048.91-47,947.10

Finding the Fourth Proportional to 81,918.77, 113,048.91 and 47,947.10

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Solution

The fourth proportional to 81,918.77, 113,048.91 and 47,947.10 is: 66,167.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,918.77 : 113,048.91 = 47,947.10 : x
  2. Step 2: Convert to fraction form
    81,918.77/113,048.91 = 47,947.10/x
  3. Step 3: Cross multiply
    81,918.77x = 113,048.91 × 47,947.10
  4. Step 4: Simplify right side
    81,918.77x = 5,420,366,827.42
  5. Step 5: Solve for x
    x = 5,420,366,827.42/81,918.77
  6. Step 6: Final answer
    x = 66,167.58

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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.