Home / 71,145.51-98,179.41-39,313.71

Finding the Fourth Proportional to 71,145.51, 98,179.41 and 39,313.71

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Solution

The fourth proportional to 71,145.51, 98,179.41 and 39,313.71 is: 54,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,145.51 : 98,179.41 = 39,313.71 : x
  2. Step 2: Convert to fraction form
    71,145.51/98,179.41 = 39,313.71/x
  3. Step 3: Cross multiply
    71,145.51x = 98,179.41 × 39,313.71
  4. Step 4: Simplify right side
    71,145.51x = 3,859,796,852.71
  5. Step 5: Solve for x
    x = 3,859,796,852.71/71,145.51
  6. Step 6: Final answer
    x = 54,252.15

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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.