Home / 85,415.45-117,872.28-47,176.56

Finding the Fourth Proportional to 85,415.45, 117,872.28 and 47,176.56

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Solution

The fourth proportional to 85,415.45, 117,872.28 and 47,176.56 is: 65,103.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,415.45 : 117,872.28 = 47,176.56 : x
  2. Step 2: Convert to fraction form
    85,415.45/117,872.28 = 47,176.56/x
  3. Step 3: Cross multiply
    85,415.45x = 117,872.28 × 47,176.56
  4. Step 4: Simplify right side
    85,415.45x = 5,560,808,689.76
  5. Step 5: Solve for x
    x = 5,560,808,689.76/85,415.45
  6. Step 6: Final answer
    x = 65,103.08

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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.