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Finding the Fourth Proportional to 93,280.62, 128,719.12 and 51,879.69

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Solution

The fourth proportional to 93,280.62, 128,719.12 and 51,879.69 is: 71,589.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,280.62 : 128,719.12 = 51,879.69 : x
  2. Step 2: Convert to fraction form
    93,280.62/128,719.12 = 51,879.69/x
  3. Step 3: Cross multiply
    93,280.62x = 128,719.12 × 51,879.69
  4. Step 4: Simplify right side
    93,280.62x = 6,677,907,461.48
  5. Step 5: Solve for x
    x = 6,677,907,461.48/93,280.62
  6. Step 6: Final answer
    x = 71,589.44

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1.5x scale

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.