Home / 75,415.42-112,992.45-45,771.14

Finding the Fourth Proportional to 75,415.42, 112,992.45 and 45,771.14

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Solution

The fourth proportional to 75,415.42, 112,992.45 and 45,771.14 is: 68,577.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,415.42 : 112,992.45 = 45,771.14 : x
  2. Step 2: Convert to fraction form
    75,415.42/112,992.45 = 45,771.14/x
  3. Step 3: Cross multiply
    75,415.42x = 112,992.45 × 45,771.14
  4. Step 4: Simplify right side
    75,415.42x = 5,171,793,247.89
  5. Step 5: Solve for x
    x = 5,171,793,247.89/75,415.42
  6. Step 6: Final answer
    x = 68,577.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.