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Finding the Fourth Proportional to 56,999.60, 78,648.62 and 35,769.30

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Solution

The fourth proportional to 56,999.60, 78,648.62 and 35,769.30 is: 49,354.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,999.60 : 78,648.62 = 35,769.30 : x
  2. Step 2: Convert to fraction form
    56,999.60/78,648.62 = 35,769.30/x
  3. Step 3: Cross multiply
    56,999.60x = 78,648.62 × 35,769.30
  4. Step 4: Simplify right side
    56,999.60x = 2,813,205,810.79
  5. Step 5: Solve for x
    x = 2,813,205,810.79/56,999.60
  6. Step 6: Final answer
    x = 49,354.84

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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.