Finding the Fourth Proportional to 98,609,862.78, 136,125,195.84 and 58,931,391.24
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Solution
The fourth proportional to 98,609,862.78, 136,125,195.84 and 58,931,391.24 is: 81,351,367.37
Step by Step Solution
- Step 1: Write the proportion equation
98,609,862.78 : 136,125,195.84 = 58,931,391.24 : x - Step 2: Convert to fraction form
98,609,862.78/136,125,195.84 = 58,931,391.24/x - Step 3: Cross multiply
98,609,862.78x = 136,125,195.84 × 58,931,391.24 - Step 4: Simplify right side
98,609,862.78x = 8,022,047,173,668,661 - Step 5: Solve for x
x = 8,022,047,173,668,661/98,609,862.78 - Step 6: Final answer
x = 81,351,367.37
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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.