Home / 42,890-64,369.56-22,119.44

Finding the Fourth Proportional to 42,890, 64,369.56 and 22,119.44

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Solution

The fourth proportional to 42,890, 64,369.56 and 22,119.44 is: 33,196.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,890 : 64,369.56 = 22,119.44 : x
  2. Step 2: Convert to fraction form
    42,890/64,369.56 = 22,119.44/x
  3. Step 3: Cross multiply
    42,890x = 64,369.56 × 22,119.44
  4. Step 4: Simplify right side
    42,890x = 1,423,818,620.25
  5. Step 5: Solve for x
    x = 1,423,818,620.25/42,890
  6. Step 6: Final answer
    x = 33,196.98

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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.