Finding the Fourth Proportional to 71,279,290.17, 98,365,420.35 and 38,684,242.17
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Solution
The fourth proportional to 71,279,290.17, 98,365,420.35 and 38,684,242.17 is: 53,384,254.15
Step by Step Solution
- Step 1: Write the proportion equation
71,279,290.17 : 98,365,420.35 = 38,684,242.17 : x - Step 2: Convert to fraction form
71,279,290.17/98,365,420.35 = 38,684,242.17/x - Step 3: Cross multiply
71,279,290.17x = 98,365,420.35 × 38,684,242.17 - Step 4: Simplify right side
71,279,290.17x = 3,805,191,741,973,246 - Step 5: Solve for x
x = 3,805,191,741,973,246/71,279,290.17 - Step 6: Final answer
x = 53,384,254.15
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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.