Home / 87,735.48-121,019.20-57,522.75

Finding the Fourth Proportional to 87,735.48, 121,019.20 and 57,522.75

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Solution

The fourth proportional to 87,735.48, 121,019.20 and 57,522.75 is: 79,344.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,735.48 : 121,019.20 = 57,522.75 : x
  2. Step 2: Convert to fraction form
    87,735.48/121,019.20 = 57,522.75/x
  3. Step 3: Cross multiply
    87,735.48x = 121,019.20 × 57,522.75
  4. Step 4: Simplify right side
    87,735.48x = 6,961,357,186.80
  5. Step 5: Solve for x
    x = 6,961,357,186.80/87,735.48
  6. Step 6: Final answer
    x = 79,344.84

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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.