Finding the Fourth Proportional to 77,654.13, 106,898.25 and 57,472.98
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Solution
The fourth proportional to 77,654.13, 106,898.25 and 57,472.98 is: 79,116.99
Step by Step Solution
- Step 1: Write the proportion equation
77,654.13 : 106,898.25 = 57,472.98 : x - Step 2: Convert to fraction form
77,654.13/106,898.25 = 57,472.98/x - Step 3: Cross multiply
77,654.13x = 106,898.25 × 57,472.98 - Step 4: Simplify right side
77,654.13x = 6,143,760,984.29 - Step 5: Solve for x
x = 6,143,760,984.29/77,654.13 - Step 6: Final answer
x = 79,116.99
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1.5x scale
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.