Finding the Fourth Proportional to 74,722.80, 103,114.35 and 40,730.54
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Solution
The fourth proportional to 74,722.80, 103,114.35 and 40,730.54 is: 56,206.45
Step by Step Solution
- Step 1: Write the proportion equation
74,722.80 : 103,114.35 = 40,730.54 : x - Step 2: Convert to fraction form
74,722.80/103,114.35 = 40,730.54/x - Step 3: Cross multiply
74,722.80x = 103,114.35 × 40,730.54 - Step 4: Simplify right side
74,722.80x = 4,199,903,415.03 - Step 5: Solve for x
x = 4,199,903,415.03/74,722.80 - Step 6: Final answer
x = 56,206.45
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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.