Home / 74,433.57-102,720.29-42,612.72

Finding the Fourth Proportional to 74,433.57, 102,720.29 and 42,612.72

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Solution

The fourth proportional to 74,433.57, 102,720.29 and 42,612.72 is: 58,806.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,433.57 : 102,720.29 = 42,612.72 : x
  2. Step 2: Convert to fraction form
    74,433.57/102,720.29 = 42,612.72/x
  3. Step 3: Cross multiply
    74,433.57x = 102,720.29 × 42,612.72
  4. Step 4: Simplify right side
    74,433.57x = 4,377,190,743.03
  5. Step 5: Solve for x
    x = 4,377,190,743.03/74,433.57
  6. Step 6: Final answer
    x = 58,806.67

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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.