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Finding the Fourth Proportional to 93,069.57, 128,436.12 and 50,628

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Solution

The fourth proportional to 93,069.57, 128,436.12 and 50,628 is: 69,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,069.57 : 128,436.12 = 50,628 : x
  2. Step 2: Convert to fraction form
    93,069.57/128,436.12 = 50,628/x
  3. Step 3: Cross multiply
    93,069.57x = 128,436.12 × 50,628
  4. Step 4: Simplify right side
    93,069.57x = 6,502,463,883.36
  5. Step 5: Solve for x
    x = 6,502,463,883.36/93,069.57
  6. Step 6: Final answer
    x = 69,866.70

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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.