Finding the Fourth Proportional to 86,196,920.80, 129,358,366.80 and 60,687,752.80
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Solution
The fourth proportional to 86,196,920.80, 129,358,366.80 and 60,687,752.80 is: 91,075,974.80
Step by Step Solution
- Step 1: Write the proportion equation
86,196,920.80 : 129,358,366.80 = 60,687,752.80 : x - Step 2: Convert to fraction form
86,196,920.80/129,358,366.80 = 60,687,752.80/x - Step 3: Cross multiply
86,196,920.80x = 129,358,366.80 × 60,687,752.80 - Step 4: Simplify right side
86,196,920.80x = 7,850,468,586,970,126 - Step 5: Solve for x
x = 7,850,468,586,970,126/86,196,920.80 - Step 6: Final answer
x = 91,075,974.80
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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.