Home / 74,406.78-111,582.36-30,009.36

Finding the Fourth Proportional to 74,406.78, 111,582.36 and 30,009.36

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Solution

The fourth proportional to 74,406.78, 111,582.36 and 30,009.36 is: 45,002.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,406.78 : 111,582.36 = 30,009.36 : x
  2. Step 2: Convert to fraction form
    74,406.78/111,582.36 = 30,009.36/x
  3. Step 3: Cross multiply
    74,406.78x = 111,582.36 × 30,009.36
  4. Step 4: Simplify right side
    74,406.78x = 3,348,515,210.89
  5. Step 5: Solve for x
    x = 3,348,515,210.89/74,406.78
  6. Step 6: Final answer
    x = 45,002.82

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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.