Finding the Fourth Proportional to 74,728.84, 103,026.48 and 61,934.08
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Solution
The fourth proportional to 74,728.84, 103,026.48 and 61,934.08 is: 85,386.72
Step by Step Solution
- Step 1: Write the proportion equation
74,728.84 : 103,026.48 = 61,934.08 : x - Step 2: Convert to fraction form
74,728.84/103,026.48 = 61,934.08/x - Step 3: Cross multiply
74,728.84x = 103,026.48 × 61,934.08 - Step 4: Simplify right side
74,728.84x = 6,380,850,254.44 - Step 5: Solve for x
x = 6,380,850,254.44/74,728.84 - Step 6: Final answer
x = 85,386.72
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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.