Home / 51,999.63-78,015.12-21,998.45

Finding the Fourth Proportional to 51,999.63, 78,015.12 and 21,998.45

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Solution

The fourth proportional to 51,999.63, 78,015.12 and 21,998.45 is: 33,004.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,999.63 : 78,015.12 = 21,998.45 : x
  2. Step 2: Convert to fraction form
    51,999.63/78,015.12 = 21,998.45/x
  3. Step 3: Cross multiply
    51,999.63x = 78,015.12 × 21,998.45
  4. Step 4: Simplify right side
    51,999.63x = 1,716,211,326.49
  5. Step 5: Solve for x
    x = 1,716,211,326.49/51,999.63
  6. Step 6: Final answer
    x = 33,004.30

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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.