Finding the Fourth Proportional to 105,586.48, 145,709.80 and 57,838.80
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Solution
The fourth proportional to 105,586.48, 145,709.80 and 57,838.80 is: 79,817.79
Step by Step Solution
- Step 1: Write the proportion equation
105,586.48 : 145,709.80 = 57,838.80 : x - Step 2: Convert to fraction form
105,586.48/145,709.80 = 57,838.80/x - Step 3: Cross multiply
105,586.48x = 145,709.80 × 57,838.80 - Step 4: Simplify right side
105,586.48x = 8,427,679,980.24 - Step 5: Solve for x
x = 8,427,679,980.24/105,586.48 - Step 6: Final answer
x = 79,817.79
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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.