Finding the Fourth Proportional to 76,109.07, 105,027.93 and 42,118.99
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Solution
The fourth proportional to 76,109.07, 105,027.93 and 42,118.99 is: 58,122.77
Step by Step Solution
- Step 1: Write the proportion equation
76,109.07 : 105,027.93 = 42,118.99 : x - Step 2: Convert to fraction form
76,109.07/105,027.93 = 42,118.99/x - Step 3: Cross multiply
76,109.07x = 105,027.93 × 42,118.99 - Step 4: Simplify right side
76,109.07x = 4,423,670,070.82 - Step 5: Solve for x
x = 4,423,670,070.82/76,109.07 - Step 6: Final answer
x = 58,122.77
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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.