Finding the Fourth Proportional to 77,485.50, 106,889.13 and 63,977.94
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Solution
The fourth proportional to 77,485.50, 106,889.13 and 63,977.94 is: 88,255.82
Step by Step Solution
- Step 1: Write the proportion equation
77,485.50 : 106,889.13 = 63,977.94 : x - Step 2: Convert to fraction form
77,485.50/106,889.13 = 63,977.94/x - Step 3: Cross multiply
77,485.50x = 106,889.13 × 63,977.94 - Step 4: Simplify right side
77,485.50x = 6,838,546,345.79 - Step 5: Solve for x
x = 6,838,546,345.79/77,485.50 - Step 6: Final answer
x = 88,255.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.