Finding the Fourth Proportional to 90,864.18, 125,122.95 and 65,325.60
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Solution
The fourth proportional to 90,864.18, 125,122.95 and 65,325.60 is: 89,955.49
Step by Step Solution
- Step 1: Write the proportion equation
90,864.18 : 125,122.95 = 65,325.60 : x - Step 2: Convert to fraction form
90,864.18/125,122.95 = 65,325.60/x - Step 3: Cross multiply
90,864.18x = 125,122.95 × 65,325.60 - Step 4: Simplify right side
90,864.18x = 8,173,731,782.52 - Step 5: Solve for x
x = 8,173,731,782.52/90,864.18 - Step 6: Final answer
x = 89,955.49
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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.