Home / 74,021.09-111,038.69-20,713.10

Finding the Fourth Proportional to 74,021.09, 111,038.69 and 20,713.10

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Solution

The fourth proportional to 74,021.09, 111,038.69 and 20,713.10 is: 31,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,021.09 : 111,038.69 = 20,713.10 : x
  2. Step 2: Convert to fraction form
    74,021.09/111,038.69 = 20,713.10/x
  3. Step 3: Cross multiply
    74,021.09x = 111,038.69 × 20,713.10
  4. Step 4: Simplify right side
    74,021.09x = 2,299,954,986.43
  5. Step 5: Solve for x
    x = 2,299,954,986.43/74,021.09
  6. Step 6: Final answer
    x = 31,071.62

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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.