Home / 71,974.08-99,322-39,267.28

Finding the Fourth Proportional to 71,974.08, 99,322 and 39,267.28

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Solution

The fourth proportional to 71,974.08, 99,322 and 39,267.28 is: 54,187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,974.08 : 99,322 = 39,267.28 : x
  2. Step 2: Convert to fraction form
    71,974.08/99,322 = 39,267.28/x
  3. Step 3: Cross multiply
    71,974.08x = 99,322 × 39,267.28
  4. Step 4: Simplify right side
    71,974.08x = 3,900,104,784.16
  5. Step 5: Solve for x
    x = 3,900,104,784.16/71,974.08
  6. Step 6: Final answer
    x = 54,187.63

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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.