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Finding the Fourth Proportional to 93,081.88, 128,455.52 and 50,643.28

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Solution

The fourth proportional to 93,081.88, 128,455.52 and 50,643.28 is: 69,889.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,081.88 : 128,455.52 = 50,643.28 : x
  2. Step 2: Convert to fraction form
    93,081.88/128,455.52 = 50,643.28/x
  3. Step 3: Cross multiply
    93,081.88x = 128,455.52 × 50,643.28
  4. Step 4: Simplify right side
    93,081.88x = 6,505,408,866.91
  5. Step 5: Solve for x
    x = 6,505,408,866.91/93,081.88
  6. Step 6: Final answer
    x = 69,889.10

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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.