Home / 30,230.60-45,345.90-28,626.80

Finding the Fourth Proportional to 30,230.60, 45,345.90 and 28,626.80

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Solution

The fourth proportional to 30,230.60, 45,345.90 and 28,626.80 is: 42,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,230.60 : 45,345.90 = 28,626.80 : x
  2. Step 2: Convert to fraction form
    30,230.60/45,345.90 = 28,626.80/x
  3. Step 3: Cross multiply
    30,230.60x = 45,345.90 × 28,626.80
  4. Step 4: Simplify right side
    30,230.60x = 1,298,108,010.12
  5. Step 5: Solve for x
    x = 1,298,108,010.12/30,230.60
  6. Step 6: Final answer
    x = 42,940.20

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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.