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Finding the Fourth Proportional to 77,692.35, 116,544.40 and 21,531.81

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Solution

The fourth proportional to 77,692.35, 116,544.40 and 21,531.81 is: 32,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,692.35 : 116,544.40 = 21,531.81 : x
  2. Step 2: Convert to fraction form
    77,692.35/116,544.40 = 21,531.81/x
  3. Step 3: Cross multiply
    77,692.35x = 116,544.40 × 21,531.81
  4. Step 4: Simplify right side
    77,692.35x = 2,509,411,877.36
  5. Step 5: Solve for x
    x = 2,509,411,877.36/77,692.35
  6. Step 6: Final answer
    x = 32,299.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.