Home / 74,428.93-102,712.25-40,438.04

Finding the Fourth Proportional to 74,428.93, 102,712.25 and 40,438.04

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Solution

The fourth proportional to 74,428.93, 102,712.25 and 40,438.04 is: 55,804.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,428.93 : 102,712.25 = 40,438.04 : x
  2. Step 2: Convert to fraction form
    74,428.93/102,712.25 = 40,438.04/x
  3. Step 3: Cross multiply
    74,428.93x = 102,712.25 × 40,438.04
  4. Step 4: Simplify right side
    74,428.93x = 4,153,481,661.52
  5. Step 5: Solve for x
    x = 4,153,481,661.52/74,428.93
  6. Step 6: Final answer
    x = 55,804.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.