Home / 77,905.98-116,817.39-40,428.32

Finding the Fourth Proportional to 77,905.98, 116,817.39 and 40,428.32

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Solution

The fourth proportional to 77,905.98, 116,817.39 and 40,428.32 is: 60,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,905.98 : 116,817.39 = 40,428.32 : x
  2. Step 2: Convert to fraction form
    77,905.98/116,817.39 = 40,428.32/x
  3. Step 3: Cross multiply
    77,905.98x = 116,817.39 × 40,428.32
  4. Step 4: Simplify right side
    77,905.98x = 4,722,730,240.40
  5. Step 5: Solve for x
    x = 4,722,730,240.40/77,905.98
  6. Step 6: Final answer
    x = 60,620.90

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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.