Finding the Fourth Proportional to 76,909.74, 115,416.09 and 26,990.07
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Solution
The fourth proportional to 76,909.74, 115,416.09 and 26,990.07 is: 40,503.17
Step by Step Solution
- Step 1: Write the proportion equation
76,909.74 : 115,416.09 = 26,990.07 : x - Step 2: Convert to fraction form
76,909.74/115,416.09 = 26,990.07/x - Step 3: Cross multiply
76,909.74x = 115,416.09 × 26,990.07 - Step 4: Simplify right side
76,909.74x = 3,115,088,348.23 - Step 5: Solve for x
x = 3,115,088,348.23/76,909.74 - Step 6: Final answer
x = 40,503.17
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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.