Finding the Fourth Proportional to 105,781.10, 145,987.36 and 58,043.74
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Solution
The fourth proportional to 105,781.10, 145,987.36 and 58,043.74 is: 80,105.54
Step by Step Solution
- Step 1: Write the proportion equation
105,781.10 : 145,987.36 = 58,043.74 : x - Step 2: Convert to fraction form
105,781.10/145,987.36 = 58,043.74/x - Step 3: Cross multiply
105,781.10x = 145,987.36 × 58,043.74 - Step 4: Simplify right side
105,781.10x = 8,473,652,367.13 - Step 5: Solve for x
x = 8,473,652,367.13/105,781.10 - Step 6: Final answer
x = 80,105.54
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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.