Finding the Fourth Proportional to 77,214.05, 106,557.20 and 43,221.69
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Solution
The fourth proportional to 77,214.05, 106,557.20 and 43,221.69 is: 59,646.95
Step by Step Solution
- Step 1: Write the proportion equation
77,214.05 : 106,557.20 = 43,221.69 : x - Step 2: Convert to fraction form
77,214.05/106,557.20 = 43,221.69/x - Step 3: Cross multiply
77,214.05x = 106,557.20 × 43,221.69 - Step 4: Simplify right side
77,214.05x = 4,605,582,265.67 - Step 5: Solve for x
x = 4,605,582,265.67/77,214.05 - Step 6: Final answer
x = 59,646.95
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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.