Finding the Fourth Proportional to 86,781.19, 130,174.65 and 29,854.53
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Solution
The fourth proportional to 86,781.19, 130,174.65 and 29,854.53 is: 44,782.78
Step by Step Solution
- Step 1: Write the proportion equation
86,781.19 : 130,174.65 = 29,854.53 : x - Step 2: Convert to fraction form
86,781.19/130,174.65 = 29,854.53/x - Step 3: Cross multiply
86,781.19x = 130,174.65 × 29,854.53 - Step 4: Simplify right side
86,781.19x = 3,886,302,993.66 - Step 5: Solve for x
x = 3,886,302,993.66/86,781.19 - Step 6: Final answer
x = 44,782.78
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.