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Finding the Fourth Proportional to 93,012.56, 128,357.04 and 50,571.20

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Solution

The fourth proportional to 93,012.56, 128,357.04 and 50,571.20 is: 69,788.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,012.56 : 128,357.04 = 50,571.20 : x
  2. Step 2: Convert to fraction form
    93,012.56/128,357.04 = 50,571.20/x
  3. Step 3: Cross multiply
    93,012.56x = 128,357.04 × 50,571.20
  4. Step 4: Simplify right side
    93,012.56x = 6,491,169,541.25
  5. Step 5: Solve for x
    x = 6,491,169,541.25/93,012.56
  6. Step 6: Final answer
    x = 69,788.10

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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.