Finding the Fourth Proportional to 101,142.97, 139,585.22 and 55,829.95
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Solution
The fourth proportional to 101,142.97, 139,585.22 and 55,829.95 is: 77,049.70
Step by Step Solution
- Step 1: Write the proportion equation
101,142.97 : 139,585.22 = 55,829.95 : x - Step 2: Convert to fraction form
101,142.97/139,585.22 = 55,829.95/x - Step 3: Cross multiply
101,142.97x = 139,585.22 × 55,829.95 - Step 4: Simplify right side
101,142.97x = 7,793,035,853.34 - Step 5: Solve for x
x = 7,793,035,853.34/101,142.97 - Step 6: Final answer
x = 77,049.70
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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.