Home / 70,828.77-106,254.69-20,913.91

Finding the Fourth Proportional to 70,828.77, 106,254.69 and 20,913.91

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Solution

The fourth proportional to 70,828.77, 106,254.69 and 20,913.91 is: 31,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,828.77 : 106,254.69 = 20,913.91 : x
  2. Step 2: Convert to fraction form
    70,828.77/106,254.69 = 20,913.91/x
  3. Step 3: Cross multiply
    70,828.77x = 106,254.69 × 20,913.91
  4. Step 4: Simplify right side
    70,828.77x = 2,222,201,234.98
  5. Step 5: Solve for x
    x = 2,222,201,234.98/70,828.77
  6. Step 6: Final answer
    x = 31,374.27

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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.