Finding the Fourth Proportional to 112,543.79, 155,309.16 and 61,557.98
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Solution
The fourth proportional to 112,543.79, 155,309.16 and 61,557.98 is: 84,949.32
Step by Step Solution
- Step 1: Write the proportion equation
112,543.79 : 155,309.16 = 61,557.98 : x - Step 2: Convert to fraction form
112,543.79/155,309.16 = 61,557.98/x - Step 3: Cross multiply
112,543.79x = 155,309.16 × 61,557.98 - Step 4: Simplify right side
112,543.79x = 9,560,518,165.10 - Step 5: Solve for x
x = 9,560,518,165.10/112,543.79 - Step 6: Final answer
x = 84,949.32
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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.