Finding the Fourth Proportional to 84,068.64, 126,106.56 and 39,132.18
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Solution
The fourth proportional to 84,068.64, 126,106.56 and 39,132.18 is: 58,699.95
Step by Step Solution
- Step 1: Write the proportion equation
84,068.64 : 126,106.56 = 39,132.18 : x - Step 2: Convert to fraction form
84,068.64/126,106.56 = 39,132.18/x - Step 3: Cross multiply
84,068.64x = 126,106.56 × 39,132.18 - Step 4: Simplify right side
84,068.64x = 4,934,824,605.10 - Step 5: Solve for x
x = 4,934,824,605.10/84,068.64 - Step 6: Final answer
x = 58,699.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.