Finding the Fourth Proportional to 81,080,135.99, 111,901,719.98 and 49,712,636.51
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Solution
The fourth proportional to 81,080,135.99, 111,901,719.98 and 49,712,636.51 is: 68,610,263.94
Step by Step Solution
- Step 1: Write the proportion equation
81,080,135.99 : 111,901,719.98 = 49,712,636.51 : x - Step 2: Convert to fraction form
81,080,135.99/111,901,719.98 = 49,712,636.51/x - Step 3: Cross multiply
81,080,135.99x = 111,901,719.98 × 49,712,636.51 - Step 4: Simplify right side
81,080,135.99x = 5,562,929,530,209,544 - Step 5: Solve for x
x = 5,562,929,530,209,544/81,080,135.99 - Step 6: Final answer
x = 68,610,263.94
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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.