Home / 74,012.09-111,036.36-21,426.89

Finding the Fourth Proportional to 74,012.09, 111,036.36 and 21,426.89

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Solution

The fourth proportional to 74,012.09, 111,036.36 and 21,426.89 is: 32,145.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,012.09 : 111,036.36 = 21,426.89 : x
  2. Step 2: Convert to fraction form
    74,012.09/111,036.36 = 21,426.89/x
  3. Step 3: Cross multiply
    74,012.09x = 111,036.36 × 21,426.89
  4. Step 4: Simplify right side
    74,012.09x = 2,379,163,871.72
  5. Step 5: Solve for x
    x = 2,379,163,871.72/74,012.09
  6. Step 6: Final answer
    x = 32,145.61

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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.