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Finding the Fourth Proportional to 93,383.81, 128,911.40 and 63,260.61

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Solution

The fourth proportional to 93,383.81, 128,911.40 and 63,260.61 is: 87,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,383.81 : 128,911.40 = 63,260.61 : x
  2. Step 2: Convert to fraction form
    93,383.81/128,911.40 = 63,260.61/x
  3. Step 3: Cross multiply
    93,383.81x = 128,911.40 × 63,260.61
  4. Step 4: Simplify right side
    93,383.81x = 8,155,013,483.65
  5. Step 5: Solve for x
    x = 8,155,013,483.65/93,383.81
  6. Step 6: Final answer
    x = 87,327.92

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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.