Finding the Fourth Proportional to 88,206.77, 121,642.36 and 68,031.70
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Solution
The fourth proportional to 88,206.77, 121,642.36 and 68,031.70 is: 93,819.74
Step by Step Solution
- Step 1: Write the proportion equation
88,206.77 : 121,642.36 = 68,031.70 : x - Step 2: Convert to fraction form
88,206.77/121,642.36 = 68,031.70/x - Step 3: Cross multiply
88,206.77x = 121,642.36 × 68,031.70 - Step 4: Simplify right side
88,206.77x = 8,275,536,068.63 - Step 5: Solve for x
x = 8,275,536,068.63/88,206.77 - Step 6: Final answer
x = 93,819.74
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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.