Finding the Fourth Proportional to 77,289.80, 115,934.70 and 21,885.80
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Solution
The fourth proportional to 77,289.80, 115,934.70 and 21,885.80 is: 32,828.70
Step by Step Solution
- Step 1: Write the proportion equation
77,289.80 : 115,934.70 = 21,885.80 : x - Step 2: Convert to fraction form
77,289.80/115,934.70 = 21,885.80/x - Step 3: Cross multiply
77,289.80x = 115,934.70 × 21,885.80 - Step 4: Simplify right side
77,289.80x = 2,537,323,657.26 - Step 5: Solve for x
x = 2,537,323,657.26/77,289.80 - Step 6: Final answer
x = 32,828.70
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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.