Home / 74,512.09-111,767.19-30,138.40

Finding the Fourth Proportional to 74,512.09, 111,767.19 and 30,138.40

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Solution

The fourth proportional to 74,512.09, 111,767.19 and 30,138.40 is: 45,207.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,512.09 : 111,767.19 = 30,138.40 : x
  2. Step 2: Convert to fraction form
    74,512.09/111,767.19 = 30,138.40/x
  3. Step 3: Cross multiply
    74,512.09x = 111,767.19 × 30,138.40
  4. Step 4: Simplify right side
    74,512.09x = 3,368,484,279.10
  5. Step 5: Solve for x
    x = 3,368,484,279.10/74,512.09
  6. Step 6: Final answer
    x = 45,207.22

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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.