Finding the Fourth Proportional to 98,038.08, 135,330.48 and 76,731.84
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Solution
The fourth proportional to 98,038.08, 135,330.48 and 76,731.84 is: 105,919.63
Step by Step Solution
- Step 1: Write the proportion equation
98,038.08 : 135,330.48 = 76,731.84 : x - Step 2: Convert to fraction form
98,038.08/135,330.48 = 76,731.84/x - Step 3: Cross multiply
98,038.08x = 135,330.48 × 76,731.84 - Step 4: Simplify right side
98,038.08x = 10,384,156,738.48 - Step 5: Solve for x
x = 10,384,156,738.48/98,038.08 - Step 6: Final answer
x = 105,919.63
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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.