Finding the Fourth Proportional to 87,988.64, 121,430.76 and 50,262.08
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Solution
The fourth proportional to 87,988.64, 121,430.76 and 50,262.08 is: 69,365.35
Step by Step Solution
- Step 1: Write the proportion equation
87,988.64 : 121,430.76 = 50,262.08 : x - Step 2: Convert to fraction form
87,988.64/121,430.76 = 50,262.08/x - Step 3: Cross multiply
87,988.64x = 121,430.76 × 50,262.08 - Step 4: Simplify right side
87,988.64x = 6,103,362,573.58 - Step 5: Solve for x
x = 6,103,362,573.58/87,988.64 - Step 6: Final answer
x = 69,365.35
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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.