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Finding the Fourth Proportional to 73,420.90, 110,135.54 and 20,826.25

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Solution

The fourth proportional to 73,420.90, 110,135.54 and 20,826.25 is: 31,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,420.90 : 110,135.54 = 20,826.25 : x
  2. Step 2: Convert to fraction form
    73,420.90/110,135.54 = 20,826.25/x
  3. Step 3: Cross multiply
    73,420.90x = 110,135.54 × 20,826.25
  4. Step 4: Simplify right side
    73,420.90x = 2,293,710,289.93
  5. Step 5: Solve for x
    x = 2,293,710,289.93/73,420.90
  6. Step 6: Final answer
    x = 31,240.56

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1.5x scale

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.