Finding the Fourth Proportional to 98,880.78, 136,465.26 and 56,445.70
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Solution
The fourth proportional to 98,880.78, 136,465.26 and 56,445.70 is: 77,900.65
Step by Step Solution
- Step 1: Write the proportion equation
98,880.78 : 136,465.26 = 56,445.70 : x - Step 2: Convert to fraction form
98,880.78/136,465.26 = 56,445.70/x - Step 3: Cross multiply
98,880.78x = 136,465.26 × 56,445.70 - Step 4: Simplify right side
98,880.78x = 7,702,877,126.38 - Step 5: Solve for x
x = 7,702,877,126.38/98,880.78 - Step 6: Final answer
x = 77,900.65
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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.