Finding the Fourth Proportional to 101,711.36, 140,369.99 and 56,403.56
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Solution
The fourth proportional to 101,711.36, 140,369.99 and 56,403.56 is: 77,841.52
Step by Step Solution
- Step 1: Write the proportion equation
101,711.36 : 140,369.99 = 56,403.56 : x - Step 2: Convert to fraction form
101,711.36/140,369.99 = 56,403.56/x - Step 3: Cross multiply
101,711.36x = 140,369.99 × 56,403.56 - Step 4: Simplify right side
101,711.36x = 7,917,366,169.30 - Step 5: Solve for x
x = 7,917,366,169.30/101,711.36 - Step 6: Final answer
x = 77,841.52
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1.5x scale
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.