Finding the Fourth Proportional to 77,479,786.07, 106,929,657.08 and 57,866,623.82
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Solution
The fourth proportional to 77,479,786.07, 106,929,657.08 and 57,866,623.82 is: 79,861,581.39
Step by Step Solution
- Step 1: Write the proportion equation
77,479,786.07 : 106,929,657.08 = 57,866,623.82 : x - Step 2: Convert to fraction form
77,479,786.07/106,929,657.08 = 57,866,623.82/x - Step 3: Cross multiply
77,479,786.07x = 106,929,657.08 × 57,866,623.82 - Step 4: Simplify right side
77,479,786.07x = 6,187,658,241,449,960 - Step 5: Solve for x
x = 6,187,658,241,449,960/77,479,786.07 - Step 6: Final answer
x = 79,861,581.39
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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.