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Finding the Fourth Proportional to 93,219.98, 128,643.57 and 50,778.51

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Solution

The fourth proportional to 93,219.98, 128,643.57 and 50,778.51 is: 70,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,219.98 : 128,643.57 = 50,778.51 : x
  2. Step 2: Convert to fraction form
    93,219.98/128,643.57 = 50,778.51/x
  3. Step 3: Cross multiply
    93,219.98x = 128,643.57 × 50,778.51
  4. Step 4: Simplify right side
    93,219.98x = 6,532,328,805.68
  5. Step 5: Solve for x
    x = 6,532,328,805.68/93,219.98
  6. Step 6: Final answer
    x = 70,074.34

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.