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Finding the Fourth Proportional to 69,878.88, 96,432.52 and 39,247.72

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Solution

The fourth proportional to 69,878.88, 96,432.52 and 39,247.72 is: 54,161.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,878.88 : 96,432.52 = 39,247.72 : x
  2. Step 2: Convert to fraction form
    69,878.88/96,432.52 = 39,247.72/x
  3. Step 3: Cross multiply
    69,878.88x = 96,432.52 × 39,247.72
  4. Step 4: Simplify right side
    69,878.88x = 3,784,756,543.85
  5. Step 5: Solve for x
    x = 3,784,756,543.85/69,878.88
  6. Step 6: Final answer
    x = 54,161.67

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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.