Finding the Fourth Proportional to 77,461.13, 106,879.88 and 45,618.41
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Solution
The fourth proportional to 77,461.13, 106,879.88 and 45,618.41 is: 62,943.69
Step by Step Solution
- Step 1: Write the proportion equation
77,461.13 : 106,879.88 = 45,618.41 : x - Step 2: Convert to fraction form
77,461.13/106,879.88 = 45,618.41/x - Step 3: Cross multiply
77,461.13x = 106,879.88 × 45,618.41 - Step 4: Simplify right side
77,461.13x = 4,875,689,424.10 - Step 5: Solve for x
x = 4,875,689,424.10/77,461.13 - Step 6: Final answer
x = 62,943.69
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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.