Finding the Fourth Proportional to 105,292.09, 145,303.08 and 57,545.44
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Solution
The fourth proportional to 105,292.09, 145,303.08 and 57,545.44 is: 79,412.70
Step by Step Solution
- Step 1: Write the proportion equation
105,292.09 : 145,303.08 = 57,545.44 : x - Step 2: Convert to fraction form
105,292.09/145,303.08 = 57,545.44/x - Step 3: Cross multiply
105,292.09x = 145,303.08 × 57,545.44 - Step 4: Simplify right side
105,292.09x = 8,361,529,173.83 - Step 5: Solve for x
x = 8,361,529,173.83/105,292.09 - Step 6: Final answer
x = 79,412.70
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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.