Home / 91,830.20-137,826.30-54,343.40

Finding the Fourth Proportional to 91,830.20, 137,826.30 and 54,343.40

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Solution

The fourth proportional to 91,830.20, 137,826.30 and 54,343.40 is: 81,563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,830.20 : 137,826.30 = 54,343.40 : x
  2. Step 2: Convert to fraction form
    91,830.20/137,826.30 = 54,343.40/x
  3. Step 3: Cross multiply
    91,830.20x = 137,826.30 × 54,343.40
  4. Step 4: Simplify right side
    91,830.20x = 7,489,949,751.42
  5. Step 5: Solve for x
    x = 7,489,949,751.42/91,830.20
  6. Step 6: Final answer
    x = 81,563.03

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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.