Finding the Fourth Proportional to 77,688,646.26, 107,208,675.81 and 42,405,279.54
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Solution
The fourth proportional to 77,688,646.26, 107,208,675.81 and 42,405,279.54 is: 58,518,381.84
Step by Step Solution
- Step 1: Write the proportion equation
77,688,646.26 : 107,208,675.81 = 42,405,279.54 : x - Step 2: Convert to fraction form
77,688,646.26/107,208,675.81 = 42,405,279.54/x - Step 3: Cross multiply
77,688,646.26x = 107,208,675.81 × 42,405,279.54 - Step 4: Simplify right side
77,688,646.26x = 4,546,213,866,836,286 - Step 5: Solve for x
x = 4,546,213,866,836,286/77,688,646.26 - Step 6: Final answer
x = 58,518,381.84
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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.