Finding the Fourth Proportional to 77,031,238.77, 115,545,691.76 and 18,739,465.65
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Solution
The fourth proportional to 77,031,238.77, 115,545,691.76 and 18,739,465.65 is: 28,108,914.72
Step by Step Solution
- Step 1: Write the proportion equation
77,031,238.77 : 115,545,691.76 = 18,739,465.65 : x - Step 2: Convert to fraction form
77,031,238.77/115,545,691.76 = 18,739,465.65/x - Step 3: Cross multiply
77,031,238.77x = 115,545,691.76 × 18,739,465.65 - Step 4: Simplify right side
77,031,238.77x = 2,165,264,521,648,310.50 - Step 5: Solve for x
x = 2,165,264,521,648,310.50/77,031,238.77 - Step 6: Final answer
x = 28,108,914.72
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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.