Home / 71,143.04-98,179.37-39,313.98

Finding the Fourth Proportional to 71,143.04, 98,179.37 and 39,313.98

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Solution

The fourth proportional to 71,143.04, 98,179.37 and 39,313.98 is: 54,254.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,143.04 : 98,179.37 = 39,313.98 : x
  2. Step 2: Convert to fraction form
    71,143.04/98,179.37 = 39,313.98/x
  3. Step 3: Cross multiply
    71,143.04x = 98,179.37 × 39,313.98
  4. Step 4: Simplify right side
    71,143.04x = 3,859,822,107.62
  5. Step 5: Solve for x
    x = 3,859,822,107.62/71,143.04
  6. Step 6: Final answer
    x = 54,254.39

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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.