Finding the Fourth Proportional to 78,298,992.68, 117,449,670.18 and 27,182,635.52
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Solution
The fourth proportional to 78,298,992.68, 117,449,670.18 and 27,182,635.52 is: 40,774,363.34
Step by Step Solution
- Step 1: Write the proportion equation
78,298,992.68 : 117,449,670.18 = 27,182,635.52 : x - Step 2: Convert to fraction form
78,298,992.68/117,449,670.18 = 27,182,635.52/x - Step 3: Cross multiply
78,298,992.68x = 117,449,670.18 × 27,182,635.52 - Step 4: Simplify right side
78,298,992.68x = 3,192,591,576,447,153 - Step 5: Solve for x
x = 3,192,591,576,447,153/78,298,992.68 - Step 6: Final answer
x = 40,774,363.34
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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.