Home / 70,828.21-106,253.85-20,913.35

Finding the Fourth Proportional to 70,828.21, 106,253.85 and 20,913.35

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Solution

The fourth proportional to 70,828.21, 106,253.85 and 20,913.35 is: 31,373.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,828.21 : 106,253.85 = 20,913.35 : x
  2. Step 2: Convert to fraction form
    70,828.21/106,253.85 = 20,913.35/x
  3. Step 3: Cross multiply
    70,828.21x = 106,253.85 × 20,913.35
  4. Step 4: Simplify right side
    70,828.21x = 2,222,123,501.05
  5. Step 5: Solve for x
    x = 2,222,123,501.05/70,828.21
  6. Step 6: Final answer
    x = 31,373.42

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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.