Home / 76,815.54-115,222.77-21,411.54

Finding the Fourth Proportional to 76,815.54, 115,222.77 and 21,411.54

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Solution

The fourth proportional to 76,815.54, 115,222.77 and 21,411.54 is: 32,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,815.54 : 115,222.77 = 21,411.54 : x
  2. Step 2: Convert to fraction form
    76,815.54/115,222.77 = 21,411.54/x
  3. Step 3: Cross multiply
    76,815.54x = 115,222.77 × 21,411.54
  4. Step 4: Simplify right side
    76,815.54x = 2,467,096,948.77
  5. Step 5: Solve for x
    x = 2,467,096,948.77/76,815.54
  6. Step 6: Final answer
    x = 32,117.16

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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.