Home / 42,161.76-63,300.96-21,399.84

Finding the Fourth Proportional to 42,161.76, 63,300.96 and 21,399.84

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Solution

The fourth proportional to 42,161.76, 63,300.96 and 21,399.84 is: 32,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,161.76 : 63,300.96 = 21,399.84 : x
  2. Step 2: Convert to fraction form
    42,161.76/63,300.96 = 21,399.84/x
  3. Step 3: Cross multiply
    42,161.76x = 63,300.96 × 21,399.84
  4. Step 4: Simplify right side
    42,161.76x = 1,354,630,415.85
  5. Step 5: Solve for x
    x = 1,354,630,415.85/42,161.76
  6. Step 6: Final answer
    x = 32,129.36

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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.