Finding the Fourth Proportional to 92,886.84, 128,185.74 and 56,575.80
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Solution
The fourth proportional to 92,886.84, 128,185.74 and 56,575.80 is: 78,075.76
Step by Step Solution
- Step 1: Write the proportion equation
92,886.84 : 128,185.74 = 56,575.80 : x - Step 2: Convert to fraction form
92,886.84/128,185.74 = 56,575.80/x - Step 3: Cross multiply
92,886.84x = 128,185.74 × 56,575.80 - Step 4: Simplify right side
92,886.84x = 7,252,210,789.09 - Step 5: Solve for x
x = 7,252,210,789.09/92,886.84 - Step 6: Final answer
x = 78,075.76
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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.