Finding the Fourth Proportional to 79,354.79, 109,509.80 and 43,545.09
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Solution
The fourth proportional to 79,354.79, 109,509.80 and 43,545.09 is: 60,092.33
Step by Step Solution
- Step 1: Write the proportion equation
79,354.79 : 109,509.80 = 43,545.09 : x - Step 2: Convert to fraction form
79,354.79/109,509.80 = 43,545.09/x - Step 3: Cross multiply
79,354.79x = 109,509.80 × 43,545.09 - Step 4: Simplify right side
79,354.79x = 4,768,613,879.16 - Step 5: Solve for x
x = 4,768,613,879.16/79,354.79 - Step 6: Final answer
x = 60,092.33
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1.5x scale
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.