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Finding the Fourth Proportional to 86,998.55, 120,055.98 and 50,697.68

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Solution

The fourth proportional to 86,998.55, 120,055.98 and 50,697.68 is: 69,961.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,998.55 : 120,055.98 = 50,697.68 : x
  2. Step 2: Convert to fraction form
    86,998.55/120,055.98 = 50,697.68/x
  3. Step 3: Cross multiply
    86,998.55x = 120,055.98 × 50,697.68
  4. Step 4: Simplify right side
    86,998.55x = 6,086,559,055.85
  5. Step 5: Solve for x
    x = 6,086,559,055.85/86,998.55
  6. Step 6: Final answer
    x = 69,961.62

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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.