Home / 74,459.37-111,688.83-30,085.60

Finding the Fourth Proportional to 74,459.37, 111,688.83 and 30,085.60

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Solution

The fourth proportional to 74,459.37, 111,688.83 and 30,085.60 is: 45,128.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,459.37 : 111,688.83 = 30,085.60 : x
  2. Step 2: Convert to fraction form
    74,459.37/111,688.83 = 30,085.60/x
  3. Step 3: Cross multiply
    74,459.37x = 111,688.83 × 30,085.60
  4. Step 4: Simplify right side
    74,459.37x = 3,360,225,463.85
  5. Step 5: Solve for x
    x = 3,360,225,463.85/74,459.37
  6. Step 6: Final answer
    x = 45,128.31

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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.