Finding the Fourth Proportional to 100,417.05, 138,576.93 and 55,094.19
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Solution
The fourth proportional to 100,417.05, 138,576.93 and 55,094.19 is: 76,030.75
Step by Step Solution
- Step 1: Write the proportion equation
100,417.05 : 138,576.93 = 55,094.19 : x - Step 2: Convert to fraction form
100,417.05/138,576.93 = 55,094.19/x - Step 3: Cross multiply
100,417.05x = 138,576.93 × 55,094.19 - Step 4: Simplify right side
100,417.05x = 7,634,783,711.04 - Step 5: Solve for x
x = 7,634,783,711.04/100,417.05 - Step 6: Final answer
x = 76,030.75
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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.