Home / 74,564.23-102,902.90-42,738.43

Finding the Fourth Proportional to 74,564.23, 102,902.90 and 42,738.43

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Solution

The fourth proportional to 74,564.23, 102,902.90 and 42,738.43 is: 58,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,564.23 : 102,902.90 = 42,738.43 : x
  2. Step 2: Convert to fraction form
    74,564.23/102,902.90 = 42,738.43/x
  3. Step 3: Cross multiply
    74,564.23x = 102,902.90 × 42,738.43
  4. Step 4: Simplify right side
    74,564.23x = 4,397,908,388.45
  5. Step 5: Solve for x
    x = 4,397,908,388.45/74,564.23
  6. Step 6: Final answer
    x = 58,981.48

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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.