Finding the Fourth Proportional to 98,102.79, 135,365.70 and 61,798.59
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Solution
The fourth proportional to 98,102.79, 135,365.70 and 61,798.59 is: 85,271.88
Step by Step Solution
- Step 1: Write the proportion equation
98,102.79 : 135,365.70 = 61,798.59 : x - Step 2: Convert to fraction form
98,102.79/135,365.70 = 61,798.59/x - Step 3: Cross multiply
98,102.79x = 135,365.70 × 61,798.59 - Step 4: Simplify right side
98,102.79x = 8,365,409,394.36 - Step 5: Solve for x
x = 8,365,409,394.36/98,102.79 - Step 6: Final answer
x = 85,271.88
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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.