Home / 74,018.63-111,029.09-21,428.30

Finding the Fourth Proportional to 74,018.63, 111,029.09 and 21,428.30

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Solution

The fourth proportional to 74,018.63, 111,029.09 and 21,428.30 is: 32,142.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,018.63 : 111,029.09 = 21,428.30 : x
  2. Step 2: Convert to fraction form
    74,018.63/111,029.09 = 21,428.30/x
  3. Step 3: Cross multiply
    74,018.63x = 111,029.09 × 21,428.30
  4. Step 4: Simplify right side
    74,018.63x = 2,379,163,986.96
  5. Step 5: Solve for x
    x = 2,379,163,986.96/74,018.63
  6. Step 6: Final answer
    x = 32,142.77

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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.