Finding the Fourth Proportional to 79,587.36, 109,831.95 and 43,778.88
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Solution
The fourth proportional to 79,587.36, 109,831.95 and 43,778.88 is: 60,415.62
Step by Step Solution
- Step 1: Write the proportion equation
79,587.36 : 109,831.95 = 43,778.88 : x - Step 2: Convert to fraction form
79,587.36/109,831.95 = 43,778.88/x - Step 3: Cross multiply
79,587.36x = 109,831.95 × 43,778.88 - Step 4: Simplify right side
79,587.36x = 4,808,319,759.22 - Step 5: Solve for x
x = 4,808,319,759.22/79,587.36 - Step 6: Final answer
x = 60,415.62
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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.