Finding the Fourth Proportional to 101,440,448.40, 139,987,747.98 and 55,030,711.08
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Solution
The fourth proportional to 101,440,448.40, 139,987,747.98 and 55,030,711.08 is: 75,942,342.88
Step by Step Solution
- Step 1: Write the proportion equation
101,440,448.40 : 139,987,747.98 = 55,030,711.08 : x - Step 2: Convert to fraction form
101,440,448.40/139,987,747.98 = 55,030,711.08/x - Step 3: Cross multiply
101,440,448.40x = 139,987,747.98 × 55,030,711.08 - Step 4: Simplify right side
101,440,448.40x = 7,703,625,313,827,233 - Step 5: Solve for x
x = 7,703,625,313,827,233/101,440,448.40 - Step 6: Final answer
x = 75,942,342.88
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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.