Finding the Fourth Proportional to 74,419.50, 102,698.95 and 40,887.66
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Solution
The fourth proportional to 74,419.50, 102,698.95 and 40,887.66 is: 56,424.99
Step by Step Solution
- Step 1: Write the proportion equation
74,419.50 : 102,698.95 = 40,887.66 : x - Step 2: Convert to fraction form
74,419.50/102,698.95 = 40,887.66/x - Step 3: Cross multiply
74,419.50x = 102,698.95 × 40,887.66 - Step 4: Simplify right side
74,419.50x = 4,199,119,749.96 - Step 5: Solve for x
x = 4,199,119,749.96/74,419.50 - Step 6: Final answer
x = 56,424.99
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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.