Finding the Fourth Proportional to 77,012.06, 106,217.80 and 53,178.62
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Solution
The fourth proportional to 77,012.06, 106,217.80 and 53,178.62 is: 73,345.86
Step by Step Solution
- Step 1: Write the proportion equation
77,012.06 : 106,217.80 = 53,178.62 : x - Step 2: Convert to fraction form
77,012.06/106,217.80 = 53,178.62/x - Step 3: Cross multiply
77,012.06x = 106,217.80 × 53,178.62 - Step 4: Simplify right side
77,012.06x = 5,648,515,359.40 - Step 5: Solve for x
x = 5,648,515,359.40/77,012.06 - Step 6: Final answer
x = 73,345.86
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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.