Home / 72,922.75-100,633.40-39,388.75

Finding the Fourth Proportional to 72,922.75, 100,633.40 and 39,388.75

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Solution

The fourth proportional to 72,922.75, 100,633.40 and 39,388.75 is: 54,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,922.75 : 100,633.40 = 39,388.75 : x
  2. Step 2: Convert to fraction form
    72,922.75/100,633.40 = 39,388.75/x
  3. Step 3: Cross multiply
    72,922.75x = 100,633.40 × 39,388.75
  4. Step 4: Simplify right side
    72,922.75x = 3,963,823,834.25
  5. Step 5: Solve for x
    x = 3,963,823,834.25/72,922.75
  6. Step 6: Final answer
    x = 54,356.48

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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.