Home / 55,638.12-76,739.94-40,535.40

Finding the Fourth Proportional to 55,638.12, 76,739.94 and 40,535.40

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Solution

The fourth proportional to 55,638.12, 76,739.94 and 40,535.40 is: 55,909.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,638.12 : 76,739.94 = 40,535.40 : x
  2. Step 2: Convert to fraction form
    55,638.12/76,739.94 = 40,535.40/x
  3. Step 3: Cross multiply
    55,638.12x = 76,739.94 × 40,535.40
  4. Step 4: Simplify right side
    55,638.12x = 3,110,684,163.88
  5. Step 5: Solve for x
    x = 3,110,684,163.88/55,638.12
  6. Step 6: Final answer
    x = 55,909.22

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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.