Home / 74,806.45-112,112.73-30,381.60

Finding the Fourth Proportional to 74,806.45, 112,112.73 and 30,381.60

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Solution

The fourth proportional to 74,806.45, 112,112.73 and 30,381.60 is: 45,533.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,806.45 : 112,112.73 = 30,381.60 : x
  2. Step 2: Convert to fraction form
    74,806.45/112,112.73 = 30,381.60/x
  3. Step 3: Cross multiply
    74,806.45x = 112,112.73 × 30,381.60
  4. Step 4: Simplify right side
    74,806.45x = 3,406,164,117.77
  5. Step 5: Solve for x
    x = 3,406,164,117.77/74,806.45
  6. Step 6: Final answer
    x = 45,533.03

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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.