Finding the Fourth Proportional to 77,130.30, 115,802.52 and 39,717.09
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Solution
The fourth proportional to 77,130.30, 115,802.52 and 39,717.09 is: 59,630.77
Step by Step Solution
- Step 1: Write the proportion equation
77,130.30 : 115,802.52 = 39,717.09 : x - Step 2: Convert to fraction form
77,130.30/115,802.52 = 39,717.09/x - Step 3: Cross multiply
77,130.30x = 115,802.52 × 39,717.09 - Step 4: Simplify right side
77,130.30x = 4,599,339,109.07 - Step 5: Solve for x
x = 4,599,339,109.07/77,130.30 - Step 6: Final answer
x = 59,630.77
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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.