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Finding the Fourth Proportional to 93,479.28, 139,995.45 and 53,916.45

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Solution

The fourth proportional to 93,479.28, 139,995.45 and 53,916.45 is: 80,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,479.28 : 139,995.45 = 53,916.45 : x
  2. Step 2: Convert to fraction form
    93,479.28/139,995.45 = 53,916.45/x
  3. Step 3: Cross multiply
    93,479.28x = 139,995.45 × 53,916.45
  4. Step 4: Simplify right side
    93,479.28x = 7,548,057,680.15
  5. Step 5: Solve for x
    x = 7,548,057,680.15/93,479.28
  6. Step 6: Final answer
    x = 80,745.78

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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.