Home / 74,301.78-111,459.33-20,994.40

Finding the Fourth Proportional to 74,301.78, 111,459.33 and 20,994.40

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Solution

The fourth proportional to 74,301.78, 111,459.33 and 20,994.40 is: 31,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,301.78 : 111,459.33 = 20,994.40 : x
  2. Step 2: Convert to fraction form
    74,301.78/111,459.33 = 20,994.40/x
  3. Step 3: Cross multiply
    74,301.78x = 111,459.33 × 20,994.40
  4. Step 4: Simplify right side
    74,301.78x = 2,340,021,479.10
  5. Step 5: Solve for x
    x = 2,340,021,479.10/74,301.78
  6. Step 6: Final answer
    x = 31,493.48

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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.