Finding the Fourth Proportional to 74,175.84, 102,421.32 and 68,508.32
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Solution
The fourth proportional to 74,175.84, 102,421.32 and 68,508.32 is: 94,595.66
Step by Step Solution
- Step 1: Write the proportion equation
74,175.84 : 102,421.32 = 68,508.32 : x - Step 2: Convert to fraction form
74,175.84/102,421.32 = 68,508.32/x - Step 3: Cross multiply
74,175.84x = 102,421.32 × 68,508.32 - Step 4: Simplify right side
74,175.84x = 7,016,712,565.38 - Step 5: Solve for x
x = 7,016,712,565.38/74,175.84 - Step 6: Final answer
x = 94,595.66
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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.