Home / 81,242.43-112,130.04-54,431.67

Finding the Fourth Proportional to 81,242.43, 112,130.04 and 54,431.67

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Solution

The fourth proportional to 81,242.43, 112,130.04 and 54,431.67 is: 75,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242.43 : 112,130.04 = 54,431.67 : x
  2. Step 2: Convert to fraction form
    81,242.43/112,130.04 = 54,431.67/x
  3. Step 3: Cross multiply
    81,242.43x = 112,130.04 × 54,431.67
  4. Step 4: Simplify right side
    81,242.43x = 6,103,425,958.97
  5. Step 5: Solve for x
    x = 6,103,425,958.97/81,242.43
  6. Step 6: Final answer
    x = 75,126.09

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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.