Finding the Fourth Proportional to 112,830.06, 155,702.08 and 61,841.68
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Solution
The fourth proportional to 112,830.06, 155,702.08 and 61,841.68 is: 85,339.65
Step by Step Solution
- Step 1: Write the proportion equation
112,830.06 : 155,702.08 = 61,841.68 : x - Step 2: Convert to fraction form
112,830.06/155,702.08 = 61,841.68/x - Step 3: Cross multiply
112,830.06x = 155,702.08 × 61,841.68 - Step 4: Simplify right side
112,830.06x = 9,628,878,206.69 - Step 5: Solve for x
x = 9,628,878,206.69/112,830.06 - Step 6: Final answer
x = 85,339.65
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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.