Finding the Fourth Proportional to 112,711.75, 155,547.12 and 62,410.75
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Solution
The fourth proportional to 112,711.75, 155,547.12 and 62,410.75 is: 86,129.55
Step by Step Solution
- Step 1: Write the proportion equation
112,711.75 : 155,547.12 = 62,410.75 : x - Step 2: Convert to fraction form
112,711.75/155,547.12 = 62,410.75/x - Step 3: Cross multiply
112,711.75x = 155,547.12 × 62,410.75 - Step 4: Simplify right side
112,711.75x = 9,707,812,419.54 - Step 5: Solve for x
x = 9,707,812,419.54/112,711.75 - Step 6: Final answer
x = 86,129.55
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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.