Finding the Fourth Proportional to 81,574.99, 122,336.56 and 55,447.63
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Solution
The fourth proportional to 81,574.99, 122,336.56 and 55,447.63 is: 83,153.82
Step by Step Solution
- Step 1: Write the proportion equation
81,574.99 : 122,336.56 = 55,447.63 : x - Step 2: Convert to fraction form
81,574.99/122,336.56 = 55,447.63/x - Step 3: Cross multiply
81,574.99x = 122,336.56 × 55,447.63 - Step 4: Simplify right side
81,574.99x = 6,783,272,314.35 - Step 5: Solve for x
x = 6,783,272,314.35/81,574.99 - Step 6: Final answer
x = 83,153.82
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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.