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Finding the Fourth Proportional to 84,969.68, 117,263.89 and 56,239.85

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Solution

The fourth proportional to 84,969.68, 117,263.89 and 56,239.85 is: 77,614.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,969.68 : 117,263.89 = 56,239.85 : x
  2. Step 2: Convert to fraction form
    84,969.68/117,263.89 = 56,239.85/x
  3. Step 3: Cross multiply
    84,969.68x = 117,263.89 × 56,239.85
  4. Step 4: Simplify right side
    84,969.68x = 6,594,903,584.02
  5. Step 5: Solve for x
    x = 6,594,903,584.02/84,969.68
  6. Step 6: Final answer
    x = 77,614.79

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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.