Home / 92,879.20-139,315.02-42,942.88

Finding the Fourth Proportional to 92,879.20, 139,315.02 and 42,942.88

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Solution

The fourth proportional to 92,879.20, 139,315.02 and 42,942.88 is: 64,412.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,879.20 : 139,315.02 = 42,942.88 : x
  2. Step 2: Convert to fraction form
    92,879.20/139,315.02 = 42,942.88/x
  3. Step 3: Cross multiply
    92,879.20x = 139,315.02 × 42,942.88
  4. Step 4: Simplify right side
    92,879.20x = 5,982,588,186.06
  5. Step 5: Solve for x
    x = 5,982,588,186.06/92,879.20
  6. Step 6: Final answer
    x = 64,412.57

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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.