Finding the Fourth Proportional to 91,178.36, 136,750.14 and 38,624.80
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Solution
The fourth proportional to 91,178.36, 136,750.14 and 38,624.80 is: 57,929.83
Step by Step Solution
- Step 1: Write the proportion equation
91,178.36 : 136,750.14 = 38,624.80 : x - Step 2: Convert to fraction form
91,178.36/136,750.14 = 38,624.80/x - Step 3: Cross multiply
91,178.36x = 136,750.14 × 38,624.80 - Step 4: Simplify right side
91,178.36x = 5,281,946,807.47 - Step 5: Solve for x
x = 5,281,946,807.47/91,178.36 - Step 6: Final answer
x = 57,929.83
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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.