Finding the Fourth Proportional to 98,691.30, 136,197.51 and 56,242.98
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Solution
The fourth proportional to 98,691.30, 136,197.51 and 56,242.98 is: 77,617.32
Step by Step Solution
- Step 1: Write the proportion equation
98,691.30 : 136,197.51 = 56,242.98 : x - Step 2: Convert to fraction form
98,691.30/136,197.51 = 56,242.98/x - Step 3: Cross multiply
98,691.30x = 136,197.51 × 56,242.98 - Step 4: Simplify right side
98,691.30x = 7,660,153,830.98 - Step 5: Solve for x
x = 7,660,153,830.98/98,691.30 - Step 6: Final answer
x = 77,617.32
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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.