Home / 70,128.85-105,245.52-51,457.13

Finding the Fourth Proportional to 70,128.85, 105,245.52 and 51,457.13

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Solution

The fourth proportional to 70,128.85, 105,245.52 and 51,457.13 is: 77,224.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,128.85 : 105,245.52 = 51,457.13 : x
  2. Step 2: Convert to fraction form
    70,128.85/105,245.52 = 51,457.13/x
  3. Step 3: Cross multiply
    70,128.85x = 105,245.52 × 51,457.13
  4. Step 4: Simplify right side
    70,128.85x = 5,415,632,147.27
  5. Step 5: Solve for x
    x = 5,415,632,147.27/70,128.85
  6. Step 6: Final answer
    x = 77,224.03

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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.