Finding the Fourth Proportional to 89,159.12, 123,039.35 and 53,349.12
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Solution
The fourth proportional to 89,159.12, 123,039.35 and 53,349.12 is: 73,621.65
Step by Step Solution
- Step 1: Write the proportion equation
89,159.12 : 123,039.35 = 53,349.12 : x - Step 2: Convert to fraction form
89,159.12/123,039.35 = 53,349.12/x - Step 3: Cross multiply
89,159.12x = 123,039.35 × 53,349.12 - Step 4: Simplify right side
89,159.12x = 6,564,040,781.13 - Step 5: Solve for x
x = 6,564,040,781.13/89,159.12 - Step 6: Final answer
x = 73,621.65
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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.