Home / 87,420.06-120,636.16-51,621.60

Finding the Fourth Proportional to 87,420.06, 120,636.16 and 51,621.60

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Solution

The fourth proportional to 87,420.06, 120,636.16 and 51,621.60 is: 71,235.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,420.06 : 120,636.16 = 51,621.60 : x
  2. Step 2: Convert to fraction form
    87,420.06/120,636.16 = 51,621.60/x
  3. Step 3: Cross multiply
    87,420.06x = 120,636.16 × 51,621.60
  4. Step 4: Simplify right side
    87,420.06x = 6,227,431,597.06
  5. Step 5: Solve for x
    x = 6,227,431,597.06/87,420.06
  6. Step 6: Final answer
    x = 71,235.73

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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.