Finding the Fourth Proportional to 98,378.09, 135,781.95 and 62,561.19
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Solution
The fourth proportional to 98,378.09, 135,781.95 and 62,561.19 is: 86,347.27
Step by Step Solution
- Step 1: Write the proportion equation
98,378.09 : 135,781.95 = 62,561.19 : x - Step 2: Convert to fraction form
98,378.09/135,781.95 = 62,561.19/x - Step 3: Cross multiply
98,378.09x = 135,781.95 × 62,561.19 - Step 4: Simplify right side
98,378.09x = 8,494,679,442.79 - Step 5: Solve for x
x = 8,494,679,442.79/98,378.09 - Step 6: Final answer
x = 86,347.27
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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.