Finding the Fourth Proportional to 77,427.84, 106,737.28 and 54,726.78
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Solution
The fourth proportional to 77,427.84, 106,737.28 and 54,726.78 is: 75,442.99
Step by Step Solution
- Step 1: Write the proportion equation
77,427.84 : 106,737.28 = 54,726.78 : x - Step 2: Convert to fraction form
77,427.84/106,737.28 = 54,726.78/x - Step 3: Cross multiply
77,427.84x = 106,737.28 × 54,726.78 - Step 4: Simplify right side
77,427.84x = 5,841,387,640.36 - Step 5: Solve for x
x = 5,841,387,640.36/77,427.84 - Step 6: Final answer
x = 75,442.99
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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.