Home / 84,178.02-126,272.60-28,015.86

Finding the Fourth Proportional to 84,178.02, 126,272.60 and 28,015.86

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Solution

The fourth proportional to 84,178.02, 126,272.60 and 28,015.86 is: 42,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,178.02 : 126,272.60 = 28,015.86 : x
  2. Step 2: Convert to fraction form
    84,178.02/126,272.60 = 28,015.86/x
  3. Step 3: Cross multiply
    84,178.02x = 126,272.60 × 28,015.86
  4. Step 4: Simplify right side
    84,178.02x = 3,537,635,483.44
  5. Step 5: Solve for x
    x = 3,537,635,483.44/84,178.02
  6. Step 6: Final answer
    x = 42,025.64

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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.