Home / 67,890.20-101,794.40-30,443.50

Finding the Fourth Proportional to 67,890.20, 101,794.40 and 30,443.50

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Solution

The fourth proportional to 67,890.20, 101,794.40 and 30,443.50 is: 45,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,890.20 : 101,794.40 = 30,443.50 : x
  2. Step 2: Convert to fraction form
    67,890.20/101,794.40 = 30,443.50/x
  3. Step 3: Cross multiply
    67,890.20x = 101,794.40 × 30,443.50
  4. Step 4: Simplify right side
    67,890.20x = 3,098,977,155.21
  5. Step 5: Solve for x
    x = 3,098,977,155.21/67,890.20
  6. Step 6: Final answer
    x = 45,646.90

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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.