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Finding the Fourth Proportional to 78,896.50, 108,877.57 and 43,086.51

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Solution

The fourth proportional to 78,896.50, 108,877.57 and 43,086.51 is: 59,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,896.50 : 108,877.57 = 43,086.51 : x
  2. Step 2: Convert to fraction form
    78,896.50/108,877.57 = 43,086.51/x
  3. Step 3: Cross multiply
    78,896.50x = 108,877.57 × 43,086.51
  4. Step 4: Simplify right side
    78,896.50x = 4,691,154,094.65
  5. Step 5: Solve for x
    x = 4,691,154,094.65/78,896.50
  6. Step 6: Final answer
    x = 59,459.60

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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.