Finding the Fourth Proportional to 81,672,608.09, 112,580,573.40 and 55,521,725.09
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Solution
The fourth proportional to 81,672,608.09, 112,580,573.40 and 55,521,725.09 is: 76,533,219.55
Step by Step Solution
- Step 1: Write the proportion equation
81,672,608.09 : 112,580,573.40 = 55,521,725.09 : x - Step 2: Convert to fraction form
81,672,608.09/112,580,573.40 = 55,521,725.09/x - Step 3: Cross multiply
81,672,608.09x = 112,580,573.40 × 55,521,725.09 - Step 4: Simplify right side
81,672,608.09x = 6,250,667,646,226,464 - Step 5: Solve for x
x = 6,250,667,646,226,464/81,672,608.09 - Step 6: Final answer
x = 76,533,219.55
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1.5x scale
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.