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Finding the Fourth Proportional to 56,410.50, 77,847.03 and 31,260.54

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Solution

The fourth proportional to 56,410.50, 77,847.03 and 31,260.54 is: 43,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,410.50 : 77,847.03 = 31,260.54 : x
  2. Step 2: Convert to fraction form
    56,410.50/77,847.03 = 31,260.54/x
  3. Step 3: Cross multiply
    56,410.50x = 77,847.03 × 31,260.54
  4. Step 4: Simplify right side
    56,410.50x = 2,433,540,195.20
  5. Step 5: Solve for x
    x = 2,433,540,195.20/56,410.50
  6. Step 6: Final answer
    x = 43,139.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.