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Finding the Fourth Proportional to 93,353.04, 128,850.48 and 55,620

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Solution

The fourth proportional to 93,353.04, 128,850.48 and 55,620 is: 76,769.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,353.04 : 128,850.48 = 55,620 : x
  2. Step 2: Convert to fraction form
    93,353.04/128,850.48 = 55,620/x
  3. Step 3: Cross multiply
    93,353.04x = 128,850.48 × 55,620
  4. Step 4: Simplify right side
    93,353.04x = 7,166,663,697.60
  5. Step 5: Solve for x
    x = 7,166,663,697.60/93,353.04
  6. Step 6: Final answer
    x = 76,769.47

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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.