Finding the Fourth Proportional to 102,365.60, 141,263.06 and 57,045.49
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Solution
The fourth proportional to 102,365.60, 141,263.06 and 57,045.49 is: 78,721.96
Step by Step Solution
- Step 1: Write the proportion equation
102,365.60 : 141,263.06 = 57,045.49 : x - Step 2: Convert to fraction form
102,365.60/141,263.06 = 57,045.49/x - Step 3: Cross multiply
102,365.60x = 141,263.06 × 57,045.49 - Step 4: Simplify right side
102,365.60x = 8,058,419,838.21 - Step 5: Solve for x
x = 8,058,419,838.21/102,365.60 - Step 6: Final answer
x = 78,721.96
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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.