Finding the Fourth Proportional to 83,545.65, 125,318.18 and 20,365.05
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Solution
The fourth proportional to 83,545.65, 125,318.18 and 20,365.05 is: 30,547.50
Step by Step Solution
- Step 1: Write the proportion equation
83,545.65 : 125,318.18 = 20,365.05 : x - Step 2: Convert to fraction form
83,545.65/125,318.18 = 20,365.05/x - Step 3: Cross multiply
83,545.65x = 125,318.18 × 20,365.05 - Step 4: Simplify right side
83,545.65x = 2,552,110,899.78 - Step 5: Solve for x
x = 2,552,110,899.78/83,545.65 - Step 6: Final answer
x = 30,547.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.