Finding the Fourth Proportional to 76,688.84, 115,052.70 and 29,303.96
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Solution
The fourth proportional to 76,688.84, 115,052.70 and 29,303.96 is: 43,963.37
Step by Step Solution
- Step 1: Write the proportion equation
76,688.84 : 115,052.70 = 29,303.96 : x - Step 2: Convert to fraction form
76,688.84/115,052.70 = 29,303.96/x - Step 3: Cross multiply
76,688.84x = 115,052.70 × 29,303.96 - Step 4: Simplify right side
76,688.84x = 3,371,499,718.69 - Step 5: Solve for x
x = 3,371,499,718.69/76,688.84 - Step 6: Final answer
x = 43,963.37
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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.