Home / 28,070.30-42,105.08-8,080.28

Finding the Fourth Proportional to 28,070.30, 42,105.08 and 8,080.28

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Solution

The fourth proportional to 28,070.30, 42,105.08 and 8,080.28 is: 12,120.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.30 : 42,105.08 = 8,080.28 : x
  2. Step 2: Convert to fraction form
    28,070.30/42,105.08 = 8,080.28/x
  3. Step 3: Cross multiply
    28,070.30x = 42,105.08 × 8,080.28
  4. Step 4: Simplify right side
    28,070.30x = 340,220,835.82
  5. Step 5: Solve for x
    x = 340,220,835.82/28,070.30
  6. Step 6: Final answer
    x = 12,120.31

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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.