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Finding the Fourth Proportional to 93,031.39, 128,379.42 and 52,747.87

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Solution

The fourth proportional to 93,031.39, 128,379.42 and 52,747.87 is: 72,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,031.39 : 128,379.42 = 52,747.87 : x
  2. Step 2: Convert to fraction form
    93,031.39/128,379.42 = 52,747.87/x
  3. Step 3: Cross multiply
    93,031.39x = 128,379.42 × 52,747.87
  4. Step 4: Simplify right side
    93,031.39x = 6,771,740,956.84
  5. Step 5: Solve for x
    x = 6,771,740,956.84/93,031.39
  6. Step 6: Final answer
    x = 72,789.85

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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.