Finding the Fourth Proportional to 98,922.80, 136,560.74 and 56,473.12
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Solution
The fourth proportional to 98,922.80, 136,560.74 and 56,473.12 is: 77,959.89
Step by Step Solution
- Step 1: Write the proportion equation
98,922.80 : 136,560.74 = 56,473.12 : x - Step 2: Convert to fraction form
98,922.80/136,560.74 = 56,473.12/x - Step 3: Cross multiply
98,922.80x = 136,560.74 × 56,473.12 - Step 4: Simplify right side
98,922.80x = 7,712,011,057.31 - Step 5: Solve for x
x = 7,712,011,057.31/98,922.80 - Step 6: Final answer
x = 77,959.89
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1.5x scale
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.