Finding the Fourth Proportional to 83,623,464.75, 115,403,659.92 and 57,217,204.80
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Solution
The fourth proportional to 83,623,464.75, 115,403,659.92 and 57,217,204.80 is: 78,961,985.90
Step by Step Solution
- Step 1: Write the proportion equation
83,623,464.75 : 115,403,659.92 = 57,217,204.80 : x - Step 2: Convert to fraction form
83,623,464.75/115,403,659.92 = 57,217,204.80/x - Step 3: Cross multiply
83,623,464.75x = 115,403,659.92 × 57,217,204.80 - Step 4: Simplify right side
83,623,464.75x = 6,603,074,844,312,191 - Step 5: Solve for x
x = 6,603,074,844,312,191/83,623,464.75 - Step 6: Final answer
x = 78,961,985.90
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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.