Home / 80,916.02-121,289.81-45,325.16

Finding the Fourth Proportional to 80,916.02, 121,289.81 and 45,325.16

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Solution

The fourth proportional to 80,916.02, 121,289.81 and 45,325.16 is: 67,940.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,916.02 : 121,289.81 = 45,325.16 : x
  2. Step 2: Convert to fraction form
    80,916.02/121,289.81 = 45,325.16/x
  3. Step 3: Cross multiply
    80,916.02x = 121,289.81 × 45,325.16
  4. Step 4: Simplify right side
    80,916.02x = 5,497,479,211.54
  5. Step 5: Solve for x
    x = 5,497,479,211.54/80,916.02
  6. Step 6: Final answer
    x = 67,940.56

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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.