Finding the Fourth Proportional to 77,288.09, 115,948.76 and 23,978.99
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Solution
The fourth proportional to 77,288.09, 115,948.76 and 23,978.99 is: 35,973.65
Step by Step Solution
- Step 1: Write the proportion equation
77,288.09 : 115,948.76 = 23,978.99 : x - Step 2: Convert to fraction form
77,288.09/115,948.76 = 23,978.99/x - Step 3: Cross multiply
77,288.09x = 115,948.76 × 23,978.99 - Step 4: Simplify right side
77,288.09x = 2,780,334,326.53 - Step 5: Solve for x
x = 2,780,334,326.53/77,288.09 - Step 6: Final answer
x = 35,973.65
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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.