Finding the Fourth Proportional to 77,190.18, 106,572.96 and 59,378.28
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Solution
The fourth proportional to 77,190.18, 106,572.96 and 59,378.28 is: 81,980.88
Step by Step Solution
- Step 1: Write the proportion equation
77,190.18 : 106,572.96 = 59,378.28 : x - Step 2: Convert to fraction form
77,190.18/106,572.96 = 59,378.28/x - Step 3: Cross multiply
77,190.18x = 106,572.96 × 59,378.28 - Step 4: Simplify right side
77,190.18x = 6,328,119,059.31 - Step 5: Solve for x
x = 6,328,119,059.31/77,190.18 - Step 6: Final answer
x = 81,980.88
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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.