Finding the Fourth Proportional to 98,855.44, 136,415.28 and 56,417.92
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Solution
The fourth proportional to 98,855.44, 136,415.28 and 56,417.92 is: 77,853.75
Step by Step Solution
- Step 1: Write the proportion equation
98,855.44 : 136,415.28 = 56,417.92 : x - Step 2: Convert to fraction form
98,855.44/136,415.28 = 56,417.92/x - Step 3: Cross multiply
98,855.44x = 136,415.28 × 56,417.92 - Step 4: Simplify right side
98,855.44x = 7,696,266,353.82 - Step 5: Solve for x
x = 7,696,266,353.82/98,855.44 - Step 6: Final answer
x = 77,853.75
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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.