Finding the Fourth Proportional to 77,215,834.08, 115,837,990.16 and 25,403,352.80
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Solution
The fourth proportional to 77,215,834.08, 115,837,990.16 and 25,403,352.80 is: 38,109,713.72
Step by Step Solution
- Step 1: Write the proportion equation
77,215,834.08 : 115,837,990.16 = 25,403,352.80 : x - Step 2: Convert to fraction form
77,215,834.08/115,837,990.16 = 25,403,352.80/x - Step 3: Cross multiply
77,215,834.08x = 115,837,990.16 × 25,403,352.80 - Step 4: Simplify right side
77,215,834.08x = 2,942,673,331,677,408.50 - Step 5: Solve for x
x = 2,942,673,331,677,408.50/77,215,834.08 - Step 6: Final answer
x = 38,109,713.72
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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.