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Finding the Fourth Proportional to 93,281.37, 128,720.15 and 51,880.44

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Solution

The fourth proportional to 93,281.37, 128,720.15 and 51,880.44 is: 71,590.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,281.37 : 128,720.15 = 51,880.44 : x
  2. Step 2: Convert to fraction form
    93,281.37/128,720.15 = 51,880.44/x
  3. Step 3: Cross multiply
    93,281.37x = 128,720.15 × 51,880.44
  4. Step 4: Simplify right side
    93,281.37x = 6,678,058,018.87
  5. Step 5: Solve for x
    x = 6,678,058,018.87/93,281.37
  6. Step 6: Final answer
    x = 71,590.48

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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.