Home / 71,139.02-98,144.34-40,919.54

Finding the Fourth Proportional to 71,139.02, 98,144.34 and 40,919.54

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Solution

The fourth proportional to 71,139.02, 98,144.34 and 40,919.54 is: 56,453.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,139.02 : 98,144.34 = 40,919.54 : x
  2. Step 2: Convert to fraction form
    71,139.02/98,144.34 = 40,919.54/x
  3. Step 3: Cross multiply
    71,139.02x = 98,144.34 × 40,919.54
  4. Step 4: Simplify right side
    71,139.02x = 4,016,021,246.40
  5. Step 5: Solve for x
    x = 4,016,021,246.40/71,139.02
  6. Step 6: Final answer
    x = 56,453.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.