Finding the Fourth Proportional to 76,804,817.60, 115,339,936.80 and 40,973,009.60
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Solution
The fourth proportional to 76,804,817.60, 115,339,936.80 and 40,973,009.60 is: 61,530,311.32
Step by Step Solution
- Step 1: Write the proportion equation
76,804,817.60 : 115,339,936.80 = 40,973,009.60 : x - Step 2: Convert to fraction form
76,804,817.60/115,339,936.80 = 40,973,009.60/x - Step 3: Cross multiply
76,804,817.60x = 115,339,936.80 × 40,973,009.60 - Step 4: Simplify right side
76,804,817.60x = 4,725,824,337,769,793 - Step 5: Solve for x
x = 4,725,824,337,769,793/76,804,817.60 - Step 6: Final answer
x = 61,530,311.32
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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.