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Finding the Fourth Proportional to 93,395.62, 128,885.38 and 53,109.42

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Solution

The fourth proportional to 93,395.62, 128,885.38 and 53,109.42 is: 73,290.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,395.62 : 128,885.38 = 53,109.42 : x
  2. Step 2: Convert to fraction form
    93,395.62/128,885.38 = 53,109.42/x
  3. Step 3: Cross multiply
    93,395.62x = 128,885.38 × 53,109.42
  4. Step 4: Simplify right side
    93,395.62x = 6,845,027,778.28
  5. Step 5: Solve for x
    x = 6,845,027,778.28/93,395.62
  6. Step 6: Final answer
    x = 73,290.67

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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.