Finding the Fourth Proportional to 115,776.40, 159,802.86 and 68,045.08
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Solution
The fourth proportional to 115,776.40, 159,802.86 and 68,045.08 is: 93,920.68
Step by Step Solution
- Step 1: Write the proportion equation
115,776.40 : 159,802.86 = 68,045.08 : x - Step 2: Convert to fraction form
115,776.40/159,802.86 = 68,045.08/x - Step 3: Cross multiply
115,776.40x = 159,802.86 × 68,045.08 - Step 4: Simplify right side
115,776.40x = 10,873,798,392.93 - Step 5: Solve for x
x = 10,873,798,392.93/115,776.40 - Step 6: Final answer
x = 93,920.68
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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.