Home / 74,015.64-111,040.02-21,429.12

Finding the Fourth Proportional to 74,015.64, 111,040.02 and 21,429.12

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Solution

The fourth proportional to 74,015.64, 111,040.02 and 21,429.12 is: 32,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,015.64 : 111,040.02 = 21,429.12 : x
  2. Step 2: Convert to fraction form
    74,015.64/111,040.02 = 21,429.12/x
  3. Step 3: Cross multiply
    74,015.64x = 111,040.02 × 21,429.12
  4. Step 4: Simplify right side
    74,015.64x = 2,379,489,913.38
  5. Step 5: Solve for x
    x = 2,379,489,913.38/74,015.64
  6. Step 6: Final answer
    x = 32,148.47

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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.