Home / 72,085.11-108,119.45-19,490.49

Finding the Fourth Proportional to 72,085.11, 108,119.45 and 19,490.49

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Solution

The fourth proportional to 72,085.11, 108,119.45 and 19,490.49 is: 29,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,085.11 : 108,119.45 = 19,490.49 : x
  2. Step 2: Convert to fraction form
    72,085.11/108,119.45 = 19,490.49/x
  3. Step 3: Cross multiply
    72,085.11x = 108,119.45 × 19,490.49
  4. Step 4: Simplify right side
    72,085.11x = 2,107,301,107.76
  5. Step 5: Solve for x
    x = 2,107,301,107.76/72,085.11
  6. Step 6: Final answer
    x = 29,233.52

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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.