Finding the Fourth Proportional to 74,339.60, 102,588.74 and 40,348.08
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Solution
The fourth proportional to 74,339.60, 102,588.74 and 40,348.08 is: 55,680.40
Step by Step Solution
- Step 1: Write the proportion equation
74,339.60 : 102,588.74 = 40,348.08 : x - Step 2: Convert to fraction form
74,339.60/102,588.74 = 40,348.08/x - Step 3: Cross multiply
74,339.60x = 102,588.74 × 40,348.08 - Step 4: Simplify right side
74,339.60x = 4,139,258,638.18 - Step 5: Solve for x
x = 4,139,258,638.18/74,339.60 - Step 6: Final answer
x = 55,680.40
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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.