Home / 74,460.36-111,690.32-30,086.60

Finding the Fourth Proportional to 74,460.36, 111,690.32 and 30,086.60

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Solution

The fourth proportional to 74,460.36, 111,690.32 and 30,086.60 is: 45,129.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,460.36 : 111,690.32 = 30,086.60 : x
  2. Step 2: Convert to fraction form
    74,460.36/111,690.32 = 30,086.60/x
  3. Step 3: Cross multiply
    74,460.36x = 111,690.32 × 30,086.60
  4. Step 4: Simplify right side
    74,460.36x = 3,360,381,981.71
  5. Step 5: Solve for x
    x = 3,360,381,981.71/74,460.36
  6. Step 6: Final answer
    x = 45,129.81

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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.