Home / 74,428.18-102,704.93-42,589.78

Finding the Fourth Proportional to 74,428.18, 102,704.93 and 42,589.78

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Solution

The fourth proportional to 74,428.18, 102,704.93 and 42,589.78 is: 58,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,428.18 : 102,704.93 = 42,589.78 : x
  2. Step 2: Convert to fraction form
    74,428.18/102,704.93 = 42,589.78/x
  3. Step 3: Cross multiply
    74,428.18x = 102,704.93 × 42,589.78
  4. Step 4: Simplify right side
    74,428.18x = 4,374,180,373.62
  5. Step 5: Solve for x
    x = 4,374,180,373.62/74,428.18
  6. Step 6: Final answer
    x = 58,770.49

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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.