Home / 84,420.02-126,635.81-28,257.86

Finding the Fourth Proportional to 84,420.02, 126,635.81 and 28,257.86

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Solution

The fourth proportional to 84,420.02, 126,635.81 and 28,257.86 is: 42,388.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,420.02 : 126,635.81 = 28,257.86 : x
  2. Step 2: Convert to fraction form
    84,420.02/126,635.81 = 28,257.86/x
  3. Step 3: Cross multiply
    84,420.02x = 126,635.81 × 28,257.86
  4. Step 4: Simplify right side
    84,420.02x = 3,578,457,165.27
  5. Step 5: Solve for x
    x = 3,578,457,165.27/84,420.02
  6. Step 6: Final answer
    x = 42,388.73

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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.