Finding the Fourth Proportional to 77,187.12, 106,513.04 and 43,189.68
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Solution
The fourth proportional to 77,187.12, 106,513.04 and 43,189.68 is: 59,598.86
Step by Step Solution
- Step 1: Write the proportion equation
77,187.12 : 106,513.04 = 43,189.68 : x - Step 2: Convert to fraction form
77,187.12/106,513.04 = 43,189.68/x - Step 3: Cross multiply
77,187.12x = 106,513.04 × 43,189.68 - Step 4: Simplify right side
77,187.12x = 4,600,264,113.43 - Step 5: Solve for x
x = 4,600,264,113.43/77,187.12 - Step 6: Final answer
x = 59,598.86
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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.