Home / 54,157.30-81,235.95-45,603.70

Finding the Fourth Proportional to 54,157.30, 81,235.95 and 45,603.70

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Solution

The fourth proportional to 54,157.30, 81,235.95 and 45,603.70 is: 68,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,157.30 : 81,235.95 = 45,603.70 : x
  2. Step 2: Convert to fraction form
    54,157.30/81,235.95 = 45,603.70/x
  3. Step 3: Cross multiply
    54,157.30x = 81,235.95 × 45,603.70
  4. Step 4: Simplify right side
    54,157.30x = 3,704,659,893.02
  5. Step 5: Solve for x
    x = 3,704,659,893.02/54,157.30
  6. Step 6: Final answer
    x = 68,405.55

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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.