Home / 49,989.90-74,986.20-21,895.50

Finding the Fourth Proportional to 49,989.90, 74,986.20 and 21,895.50

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Solution

The fourth proportional to 49,989.90, 74,986.20 and 21,895.50 is: 32,843.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,989.90 : 74,986.20 = 21,895.50 : x
  2. Step 2: Convert to fraction form
    49,989.90/74,986.20 = 21,895.50/x
  3. Step 3: Cross multiply
    49,989.90x = 74,986.20 × 21,895.50
  4. Step 4: Simplify right side
    49,989.90x = 1,641,860,342.10
  5. Step 5: Solve for x
    x = 1,641,860,342.10/49,989.90
  6. Step 6: Final answer
    x = 32,843.84

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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.