Finding the Fourth Proportional to 83,630.05, 115,408.49 and 45,389.66
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Solution
The fourth proportional to 83,630.05, 115,408.49 and 45,389.66 is: 62,637.19
Step by Step Solution
- Step 1: Write the proportion equation
83,630.05 : 115,408.49 = 45,389.66 : x - Step 2: Convert to fraction form
83,630.05/115,408.49 = 45,389.66/x - Step 3: Cross multiply
83,630.05x = 115,408.49 × 45,389.66 - Step 4: Simplify right side
83,630.05x = 5,238,351,318.22 - Step 5: Solve for x
x = 5,238,351,318.22/83,630.05 - Step 6: Final answer
x = 62,637.19
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1.5x scale
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.