Finding the Fourth Proportional to 55,130,402.88, 76,084,403.90 and 31,611,128.09
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Solution
The fourth proportional to 55,130,402.88, 76,084,403.90 and 31,611,128.09 is: 43,625,907.15
Step by Step Solution
- Step 1: Write the proportion equation
55,130,402.88 : 76,084,403.90 = 31,611,128.09 : x - Step 2: Convert to fraction form
55,130,402.88/76,084,403.90 = 31,611,128.09/x - Step 3: Cross multiply
55,130,402.88x = 76,084,403.90 × 31,611,128.09 - Step 4: Simplify right side
55,130,402.88x = 2,405,113,837,490,566.50 - Step 5: Solve for x
x = 2,405,113,837,490,566.50/55,130,402.88 - Step 6: Final answer
x = 43,625,907.15
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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.