Home / 61,121.70-91,682.55-51,280.20

Finding the Fourth Proportional to 61,121.70, 91,682.55 and 51,280.20

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Solution

The fourth proportional to 61,121.70, 91,682.55 and 51,280.20 is: 76,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,121.70 : 91,682.55 = 51,280.20 : x
  2. Step 2: Convert to fraction form
    61,121.70/91,682.55 = 51,280.20/x
  3. Step 3: Cross multiply
    61,121.70x = 91,682.55 × 51,280.20
  4. Step 4: Simplify right side
    61,121.70x = 4,701,499,500.51
  5. Step 5: Solve for x
    x = 4,701,499,500.51/61,121.70
  6. Step 6: Final answer
    x = 76,920.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.