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Finding the Fourth Proportional to 78,952.70, 108,953.41 and 43,141.89

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Solution

The fourth proportional to 78,952.70, 108,953.41 and 43,141.89 is: 59,535.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,952.70 : 108,953.41 = 43,141.89 : x
  2. Step 2: Convert to fraction form
    78,952.70/108,953.41 = 43,141.89/x
  3. Step 3: Cross multiply
    78,952.70x = 108,953.41 × 43,141.89
  4. Step 4: Simplify right side
    78,952.70x = 4,700,455,268.87
  5. Step 5: Solve for x
    x = 4,700,455,268.87/78,952.70
  6. Step 6: Final answer
    x = 59,535.08

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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.