Home / 81,372.48-122,066.01-28,782.42

Finding the Fourth Proportional to 81,372.48, 122,066.01 and 28,782.42

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Solution

The fourth proportional to 81,372.48, 122,066.01 and 28,782.42 is: 43,176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,372.48 : 122,066.01 = 28,782.42 : x
  2. Step 2: Convert to fraction form
    81,372.48/122,066.01 = 28,782.42/x
  3. Step 3: Cross multiply
    81,372.48x = 122,066.01 × 28,782.42
  4. Step 4: Simplify right side
    81,372.48x = 3,513,355,167.54
  5. Step 5: Solve for x
    x = 3,513,355,167.54/81,372.48
  6. Step 6: Final answer
    x = 43,176.21

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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.