Home / 74,920.10-112,396.56-28,172.98

Finding the Fourth Proportional to 74,920.10, 112,396.56 and 28,172.98

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Solution

The fourth proportional to 74,920.10, 112,396.56 and 28,172.98 is: 42,265.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,920.10 : 112,396.56 = 28,172.98 : x
  2. Step 2: Convert to fraction form
    74,920.10/112,396.56 = 28,172.98/x
  3. Step 3: Cross multiply
    74,920.10x = 112,396.56 × 28,172.98
  4. Step 4: Simplify right side
    74,920.10x = 3,166,546,036.95
  5. Step 5: Solve for x
    x = 3,166,546,036.95/74,920.10
  6. Step 6: Final answer
    x = 42,265.64

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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.