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Finding the Fourth Proportional to 78,805.92, 108,750.48 and 42,996.96

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Solution

The fourth proportional to 78,805.92, 108,750.48 and 42,996.96 is: 59,334.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,805.92 : 108,750.48 = 42,996.96 : x
  2. Step 2: Convert to fraction form
    78,805.92/108,750.48 = 42,996.96/x
  3. Step 3: Cross multiply
    78,805.92x = 108,750.48 × 42,996.96
  4. Step 4: Simplify right side
    78,805.92x = 4,675,940,038.54
  5. Step 5: Solve for x
    x = 4,675,940,038.54/78,805.92
  6. Step 6: Final answer
    x = 59,334.88

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1.5x scale

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.