Finding the Fourth Proportional to 93,138.12, 139,690.60 and 39,860.06
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Solution
The fourth proportional to 93,138.12, 139,690.60 and 39,860.06 is: 59,782.99
Step by Step Solution
- Step 1: Write the proportion equation
93,138.12 : 139,690.60 = 39,860.06 : x - Step 2: Convert to fraction form
93,138.12/139,690.60 = 39,860.06/x - Step 3: Cross multiply
93,138.12x = 139,690.60 × 39,860.06 - Step 4: Simplify right side
93,138.12x = 5,568,074,899.33 - Step 5: Solve for x
x = 5,568,074,899.33/93,138.12 - Step 6: Final answer
x = 59,782.99
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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.