Finding the Fourth Proportional to 78,154.23, 107,840.66 and 46,317.99
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Solution
The fourth proportional to 78,154.23, 107,840.66 and 46,317.99 is: 63,911.61
Step by Step Solution
- Step 1: Write the proportion equation
78,154.23 : 107,840.66 = 46,317.99 : x - Step 2: Convert to fraction form
78,154.23/107,840.66 = 46,317.99/x - Step 3: Cross multiply
78,154.23x = 107,840.66 × 46,317.99 - Step 4: Simplify right side
78,154.23x = 4,994,962,379.88 - Step 5: Solve for x
x = 4,994,962,379.88/78,154.23 - Step 6: Final answer
x = 63,911.61
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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.