Home / 81,042.16-121,616.58-28,450.24

Finding the Fourth Proportional to 81,042.16, 121,616.58 and 28,450.24

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Solution

The fourth proportional to 81,042.16, 121,616.58 and 28,450.24 is: 42,694.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.16 : 121,616.58 = 28,450.24 : x
  2. Step 2: Convert to fraction form
    81,042.16/121,616.58 = 28,450.24/x
  3. Step 3: Cross multiply
    81,042.16x = 121,616.58 × 28,450.24
  4. Step 4: Simplify right side
    81,042.16x = 3,460,020,888.98
  5. Step 5: Solve for x
    x = 3,460,020,888.98/81,042.16
  6. Step 6: Final answer
    x = 42,694.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.