Home / 30,005.22-45,008.22-28,178.66

Finding the Fourth Proportional to 30,005.22, 45,008.22 and 28,178.66

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Solution

The fourth proportional to 30,005.22, 45,008.22 and 28,178.66 is: 42,268.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.22 : 45,008.22 = 28,178.66 : x
  2. Step 2: Convert to fraction form
    30,005.22/45,008.22 = 28,178.66/x
  3. Step 3: Cross multiply
    30,005.22x = 45,008.22 × 28,178.66
  4. Step 4: Simplify right side
    30,005.22x = 1,268,271,328.59
  5. Step 5: Solve for x
    x = 1,268,271,328.59/30,005.22
  6. Step 6: Final answer
    x = 42,268.36

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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.