Finding the Fourth Proportional to 77,028,508.78, 115,351,101.51 and 53,891,117.98
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Solution
The fourth proportional to 77,028,508.78, 115,351,101.51 and 53,891,117.98 is: 80,702,585.56
Step by Step Solution
- Step 1: Write the proportion equation
77,028,508.78 : 115,351,101.51 = 53,891,117.98 : x - Step 2: Convert to fraction form
77,028,508.78/115,351,101.51 = 53,891,117.98/x - Step 3: Cross multiply
77,028,508.78x = 115,351,101.51 × 53,891,117.98 - Step 4: Simplify right side
77,028,508.78x = 6,216,399,820,598,366 - Step 5: Solve for x
x = 6,216,399,820,598,366/77,028,508.78 - Step 6: Final answer
x = 80,702,585.56
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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.