Home / 55,170.12-76,136.42-30,021.32

Finding the Fourth Proportional to 55,170.12, 76,136.42 and 30,021.32

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Solution

The fourth proportional to 55,170.12, 76,136.42 and 30,021.32 is: 41,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,170.12 : 76,136.42 = 30,021.32 : x
  2. Step 2: Convert to fraction form
    55,170.12/76,136.42 = 30,021.32/x
  3. Step 3: Cross multiply
    55,170.12x = 76,136.42 × 30,021.32
  4. Step 4: Simplify right side
    55,170.12x = 2,285,715,828.47
  5. Step 5: Solve for x
    x = 2,285,715,828.47/55,170.12
  6. Step 6: Final answer
    x = 41,430.32

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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.