Home / 87,909.36-121,323.60-50,189.28

Finding the Fourth Proportional to 87,909.36, 121,323.60 and 50,189.28

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Solution

The fourth proportional to 87,909.36, 121,323.60 and 50,189.28 is: 69,266.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.36 : 121,323.60 = 50,189.28 : x
  2. Step 2: Convert to fraction form
    87,909.36/121,323.60 = 50,189.28/x
  3. Step 3: Cross multiply
    87,909.36x = 121,323.60 × 50,189.28
  4. Step 4: Simplify right side
    87,909.36x = 6,089,144,131.01
  5. Step 5: Solve for x
    x = 6,089,144,131.01/87,909.36
  6. Step 6: Final answer
    x = 69,266.16

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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.