Home / 45,220.20-67,830.30-31,223.40

Finding the Fourth Proportional to 45,220.20, 67,830.30 and 31,223.40

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Solution

The fourth proportional to 45,220.20, 67,830.30 and 31,223.40 is: 46,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,220.20 : 67,830.30 = 31,223.40 : x
  2. Step 2: Convert to fraction form
    45,220.20/67,830.30 = 31,223.40/x
  3. Step 3: Cross multiply
    45,220.20x = 67,830.30 × 31,223.40
  4. Step 4: Simplify right side
    45,220.20x = 2,117,892,589.02
  5. Step 5: Solve for x
    x = 2,117,892,589.02/45,220.20
  6. Step 6: Final answer
    x = 46,835.10

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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.