Finding the Fourth Proportional to 98,090.60, 135,363.76 and 57,806.06
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Solution
The fourth proportional to 98,090.60, 135,363.76 and 57,806.06 is: 79,771.61
Step by Step Solution
- Step 1: Write the proportion equation
98,090.60 : 135,363.76 = 57,806.06 : x - Step 2: Convert to fraction form
98,090.60/135,363.76 = 57,806.06/x - Step 3: Cross multiply
98,090.60x = 135,363.76 × 57,806.06 - Step 4: Simplify right side
98,090.60x = 7,824,844,811.05 - Step 5: Solve for x
x = 7,824,844,811.05/98,090.60 - Step 6: Final answer
x = 79,771.61
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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.