Finding the Fourth Proportional to 74,820.35, 103,248.86 and 40,827.99
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Solution
The fourth proportional to 74,820.35, 103,248.86 and 40,827.99 is: 56,340.87
Step by Step Solution
- Step 1: Write the proportion equation
74,820.35 : 103,248.86 = 40,827.99 : x - Step 2: Convert to fraction form
74,820.35/103,248.86 = 40,827.99/x - Step 3: Cross multiply
74,820.35x = 103,248.86 × 40,827.99 - Step 4: Simplify right side
74,820.35x = 4,215,443,525.66 - Step 5: Solve for x
x = 4,215,443,525.66/74,820.35 - Step 6: Final answer
x = 56,340.87
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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.