Finding the Fourth Proportional to 8,751,845.80, 13,127,768.70 and 7,688,963.80
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Solution
The fourth proportional to 8,751,845.80, 13,127,768.70 and 7,688,963.80 is: 11,533,445.70
Step by Step Solution
- Step 1: Write the proportion equation
8,751,845.80 : 13,127,768.70 = 7,688,963.80 : x - Step 2: Convert to fraction form
8,751,845.80/13,127,768.70 = 7,688,963.80/x - Step 3: Cross multiply
8,751,845.80x = 13,127,768.70 × 7,688,963.80 - Step 4: Simplify right side
8,751,845.80x = 100,938,938,309,073.05 - Step 5: Solve for x
x = 100,938,938,309,073.05/8,751,845.80 - Step 6: Final answer
x = 11,533,445.70
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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.