Home / 74,285.25-102,512.00-42,015.60

Finding the Fourth Proportional to 74,285.25, 102,512.00 and 42,015.60

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Solution

The fourth proportional to 74,285.25, 102,512.00 and 42,015.60 is: 57,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,285.25 : 102,512.00 = 42,015.60 : x
  2. Step 2: Convert to fraction form
    74,285.25/102,512.00 = 42,015.60/x
  3. Step 3: Cross multiply
    74,285.25x = 102,512.00 × 42,015.60
  4. Step 4: Simplify right side
    74,285.25x = 4,307,102,977.12
  5. Step 5: Solve for x
    x = 4,307,102,977.12/74,285.25
  6. Step 6: Final answer
    x = 57,980.59

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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.