Home / 87,412.68-120,648.60-55,575.36

Finding the Fourth Proportional to 87,412.68, 120,648.60 and 55,575.36

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Solution

The fourth proportional to 87,412.68, 120,648.60 and 55,575.36 is: 76,706.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,412.68 : 120,648.60 = 55,575.36 : x
  2. Step 2: Convert to fraction form
    87,412.68/120,648.60 = 55,575.36/x
  3. Step 3: Cross multiply
    87,412.68x = 120,648.60 × 55,575.36
  4. Step 4: Simplify right side
    87,412.68x = 6,705,089,378.50
  5. Step 5: Solve for x
    x = 6,705,089,378.50/87,412.68
  6. Step 6: Final answer
    x = 76,706.14

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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.