Finding the Fourth Proportional to 85,357.41, 128,202.09 and 69,574.02
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Solution
The fourth proportional to 85,357.41, 128,202.09 and 69,574.02 is: 104,496.31
Step by Step Solution
- Step 1: Write the proportion equation
85,357.41 : 128,202.09 = 69,574.02 : x - Step 2: Convert to fraction form
85,357.41/128,202.09 = 69,574.02/x - Step 3: Cross multiply
85,357.41x = 128,202.09 × 69,574.02 - Step 4: Simplify right side
85,357.41x = 8,919,534,773.70 - Step 5: Solve for x
x = 8,919,534,773.70/85,357.41 - Step 6: Final answer
x = 104,496.31
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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.