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Finding the Fourth Proportional to 49,995.90, 74,995.20 and 21,901.50

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Solution

The fourth proportional to 49,995.90, 74,995.20 and 21,901.50 is: 32,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,995.90 : 74,995.20 = 21,901.50 : x
  2. Step 2: Convert to fraction form
    49,995.90/74,995.20 = 21,901.50/x
  3. Step 3: Cross multiply
    49,995.90x = 74,995.20 × 21,901.50
  4. Step 4: Simplify right side
    49,995.90x = 1,642,507,372.80
  5. Step 5: Solve for x
    x = 1,642,507,372.80/49,995.90
  6. Step 6: Final answer
    x = 32,852.84

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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.