Finding the Fourth Proportional to 72,372,906.14, 99,875,381.81 and 39,333,157.07
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Solution
The fourth proportional to 72,372,906.14, 99,875,381.81 and 39,333,157.07 is: 54,280,175.96
Step by Step Solution
- Step 1: Write the proportion equation
72,372,906.14 : 99,875,381.81 = 39,333,157.07 : x - Step 2: Convert to fraction form
72,372,906.14/99,875,381.81 = 39,333,157.07/x - Step 3: Cross multiply
72,372,906.14x = 99,875,381.81 × 39,333,157.07 - Step 4: Simplify right side
72,372,906.14x = 3,928,414,079,462,908 - Step 5: Solve for x
x = 3,928,414,079,462,908/72,372,906.14 - Step 6: Final answer
x = 54,280,175.96
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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.