Finding the Fourth Proportional to 76,792.80, 105,970.31 and 42,804.99
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Solution
The fourth proportional to 76,792.80, 105,970.31 and 42,804.99 is: 59,068.79
Step by Step Solution
- Step 1: Write the proportion equation
76,792.80 : 105,970.31 = 42,804.99 : x - Step 2: Convert to fraction form
76,792.80/105,970.31 = 42,804.99/x - Step 3: Cross multiply
76,792.80x = 105,970.31 × 42,804.99 - Step 4: Simplify right side
76,792.80x = 4,536,057,315.97 - Step 5: Solve for x
x = 4,536,057,315.97/76,792.80 - Step 6: Final answer
x = 59,068.79
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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.