Finding the Fourth Proportional to 98,702.99, 136,209.74 and 53,381.03
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Solution
The fourth proportional to 98,702.99, 136,209.74 and 53,381.03 is: 73,665.61
Step by Step Solution
- Step 1: Write the proportion equation
98,702.99 : 136,209.74 = 53,381.03 : x - Step 2: Convert to fraction form
98,702.99/136,209.74 = 53,381.03/x - Step 3: Cross multiply
98,702.99x = 136,209.74 × 53,381.03 - Step 4: Simplify right side
98,702.99x = 7,271,015,980.24 - Step 5: Solve for x
x = 7,271,015,980.24/98,702.99 - Step 6: Final answer
x = 73,665.61
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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.