Finding the Fourth Proportional to 86,285.04, 129,458.70 and 30,133.41
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Solution
The fourth proportional to 86,285.04, 129,458.70 and 30,133.41 is: 45,210.99
Step by Step Solution
- Step 1: Write the proportion equation
86,285.04 : 129,458.70 = 30,133.41 : x - Step 2: Convert to fraction form
86,285.04/129,458.70 = 30,133.41/x - Step 3: Cross multiply
86,285.04x = 129,458.70 × 30,133.41 - Step 4: Simplify right side
86,285.04x = 3,901,032,085.17 - Step 5: Solve for x
x = 3,901,032,085.17/86,285.04 - Step 6: Final answer
x = 45,210.99
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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.