Finding the Fourth Proportional to 97,988.76, 135,291.27 and 65,771.70
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Solution
The fourth proportional to 97,988.76, 135,291.27 and 65,771.70 is: 90,809.77
Step by Step Solution
- Step 1: Write the proportion equation
97,988.76 : 135,291.27 = 65,771.70 : x - Step 2: Convert to fraction form
97,988.76/135,291.27 = 65,771.70/x - Step 3: Cross multiply
97,988.76x = 135,291.27 × 65,771.70 - Step 4: Simplify right side
97,988.76x = 8,898,336,823.06 - Step 5: Solve for x
x = 8,898,336,823.06/97,988.76 - Step 6: Final answer
x = 90,809.77
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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.