Home / 71,431.60-98,576.81-39,165.55

Finding the Fourth Proportional to 71,431.60, 98,576.81 and 39,165.55

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Solution

The fourth proportional to 71,431.60, 98,576.81 and 39,165.55 is: 54,049.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,431.60 : 98,576.81 = 39,165.55 : x
  2. Step 2: Convert to fraction form
    71,431.60/98,576.81 = 39,165.55/x
  3. Step 3: Cross multiply
    71,431.60x = 98,576.81 × 39,165.55
  4. Step 4: Simplify right side
    71,431.60x = 3,860,814,785.07
  5. Step 5: Solve for x
    x = 3,860,814,785.07/71,431.60
  6. Step 6: Final answer
    x = 54,049.12

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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.