Home / 56,137.10-77,469.15-30,986.54

Finding the Fourth Proportional to 56,137.10, 77,469.15 and 30,986.54

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Solution

The fourth proportional to 56,137.10, 77,469.15 and 30,986.54 is: 42,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,137.10 : 77,469.15 = 30,986.54 : x
  2. Step 2: Convert to fraction form
    56,137.10/77,469.15 = 30,986.54/x
  3. Step 3: Cross multiply
    56,137.10x = 77,469.15 × 30,986.54
  4. Step 4: Simplify right side
    56,137.10x = 2,400,500,915.24
  5. Step 5: Solve for x
    x = 2,400,500,915.24/56,137.10
  6. Step 6: Final answer
    x = 42,761.40

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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.