Home / 74,511.09-111,765.69-30,137.40

Finding the Fourth Proportional to 74,511.09, 111,765.69 and 30,137.40

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Solution

The fourth proportional to 74,511.09, 111,765.69 and 30,137.40 is: 45,205.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,511.09 : 111,765.69 = 30,137.40 : x
  2. Step 2: Convert to fraction form
    74,511.09/111,765.69 = 30,137.40/x
  3. Step 3: Cross multiply
    74,511.09x = 111,765.69 × 30,137.40
  4. Step 4: Simplify right side
    74,511.09x = 3,368,327,305.81
  5. Step 5: Solve for x
    x = 3,368,327,305.81/74,511.09
  6. Step 6: Final answer
    x = 45,205.72

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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.