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Finding the Fourth Proportional to 93,888, 129,565.44 and 54,144

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Solution

The fourth proportional to 93,888, 129,565.44 and 54,144 is: 74,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,888 : 129,565.44 = 54,144 : x
  2. Step 2: Convert to fraction form
    93,888/129,565.44 = 54,144/x
  3. Step 3: Cross multiply
    93,888x = 129,565.44 × 54,144
  4. Step 4: Simplify right side
    93,888x = 7,015,191,183.36
  5. Step 5: Solve for x
    x = 7,015,191,183.36/93,888
  6. Step 6: Final answer
    x = 74,718.72

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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.