Finding the Fourth Proportional to 105,088.84, 145,020.66 and 57,340.96
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Solution
The fourth proportional to 105,088.84, 145,020.66 and 57,340.96 is: 79,129.47
Step by Step Solution
- Step 1: Write the proportion equation
105,088.84 : 145,020.66 = 57,340.96 : x - Step 2: Convert to fraction form
105,088.84/145,020.66 = 57,340.96/x - Step 3: Cross multiply
105,088.84x = 145,020.66 × 57,340.96 - Step 4: Simplify right side
105,088.84x = 8,315,623,864.23 - Step 5: Solve for x
x = 8,315,623,864.23/105,088.84 - Step 6: Final answer
x = 79,129.47
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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.