Home / 74,441.60-111,665.76-21,137.36

Finding the Fourth Proportional to 74,441.60, 111,665.76 and 21,137.36

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Solution

The fourth proportional to 74,441.60, 111,665.76 and 21,137.36 is: 31,706.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,441.60 : 111,665.76 = 21,137.36 : x
  2. Step 2: Convert to fraction form
    74,441.60/111,665.76 = 21,137.36/x
  3. Step 3: Cross multiply
    74,441.60x = 111,665.76 × 21,137.36
  4. Step 4: Simplify right side
    74,441.60x = 2,360,319,368.79
  5. Step 5: Solve for x
    x = 2,360,319,368.79/74,441.60
  6. Step 6: Final answer
    x = 31,706.99

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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.