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Finding the Fourth Proportional to 105,750.48, 145,885.32 and 63,300.78

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Solution

The fourth proportional to 105,750.48, 145,885.32 and 63,300.78 is: 87,324.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,750.48 : 145,885.32 = 63,300.78 : x
  2. Step 2: Convert to fraction form
    105,750.48/145,885.32 = 63,300.78/x
  3. Step 3: Cross multiply
    105,750.48x = 145,885.32 × 63,300.78
  4. Step 4: Simplify right side
    105,750.48x = 9,234,654,546.55
  5. Step 5: Solve for x
    x = 9,234,654,546.55/105,750.48
  6. Step 6: Final answer
    x = 87,324.94

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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.