Finding the Fourth Proportional to 81,688,959.68, 112,734,761.09 and 45,936,652.62
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Solution
The fourth proportional to 81,688,959.68, 112,734,761.09 and 45,936,652.62 is: 63,394,828.12
Step by Step Solution
- Step 1: Write the proportion equation
81,688,959.68 : 112,734,761.09 = 45,936,652.62 : x - Step 2: Convert to fraction form
81,688,959.68/112,734,761.09 = 45,936,652.62/x - Step 3: Cross multiply
81,688,959.68x = 112,734,761.09 × 45,936,652.62 - Step 4: Simplify right side
81,688,959.68x = 5,178,657,558,160,339 - Step 5: Solve for x
x = 5,178,657,558,160,339/81,688,959.68 - Step 6: Final answer
x = 63,394,828.12
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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.