Finding the Fourth Proportional to 74,420.58, 102,701.52 and 40,429.74
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Solution
The fourth proportional to 74,420.58, 102,701.52 and 40,429.74 is: 55,793.65
Step by Step Solution
- Step 1: Write the proportion equation
74,420.58 : 102,701.52 = 40,429.74 : x - Step 2: Convert to fraction form
74,420.58/102,701.52 = 40,429.74/x - Step 3: Cross multiply
74,420.58x = 102,701.52 × 40,429.74 - Step 4: Simplify right side
74,420.58x = 4,152,195,751.20 - Step 5: Solve for x
x = 4,152,195,751.20/74,420.58 - Step 6: Final answer
x = 55,793.65
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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.