Finding the Fourth Proportional to 86,376.78, 129,399.93 and 76,267.98
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Solution
The fourth proportional to 86,376.78, 129,399.93 and 76,267.98 is: 114,256.07
Step by Step Solution
- Step 1: Write the proportion equation
86,376.78 : 129,399.93 = 76,267.98 : x - Step 2: Convert to fraction form
86,376.78/129,399.93 = 76,267.98/x - Step 3: Cross multiply
86,376.78x = 129,399.93 × 76,267.98 - Step 4: Simplify right side
86,376.78x = 9,869,071,273.24 - Step 5: Solve for x
x = 9,869,071,273.24/86,376.78 - Step 6: Final answer
x = 114,256.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.