Finding the Fourth Proportional to 105,378,675.42, 145,424,293.75 and 57,693,134.25
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Solution
The fourth proportional to 105,378,675.42, 145,424,293.75 and 57,693,134.25 is: 79,617,467.86
Step by Step Solution
- Step 1: Write the proportion equation
105,378,675.42 : 145,424,293.75 = 57,693,134.25 : x - Step 2: Convert to fraction form
105,378,675.42/145,424,293.75 = 57,693,134.25/x - Step 3: Cross multiply
105,378,675.42x = 145,424,293.75 × 57,693,134.25 - Step 4: Simplify right side
105,378,675.42x = 8,389,983,303,215,702 - Step 5: Solve for x
x = 8,389,983,303,215,702/105,378,675.42 - Step 6: Final answer
x = 79,617,467.86
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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.