Home / 47,420.85-71,135.37-12,360.50

Finding the Fourth Proportional to 47,420.85, 71,135.37 and 12,360.50

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Solution

The fourth proportional to 47,420.85, 71,135.37 and 12,360.50 is: 18,541.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,420.85 : 71,135.37 = 12,360.50 : x
  2. Step 2: Convert to fraction form
    47,420.85/71,135.37 = 12,360.50/x
  3. Step 3: Cross multiply
    47,420.85x = 71,135.37 × 12,360.50
  4. Step 4: Simplify right side
    47,420.85x = 879,268,740.89
  5. Step 5: Solve for x
    x = 879,268,740.89/47,420.85
  6. Step 6: Final answer
    x = 18,541.82

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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.