Finding the Fourth Proportional to 98,972.47, 136,589.25 and 56,530.09
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Solution
The fourth proportional to 98,972.47, 136,589.25 and 56,530.09 is: 78,015.66
Step by Step Solution
- Step 1: Write the proportion equation
98,972.47 : 136,589.25 = 56,530.09 : x - Step 2: Convert to fraction form
98,972.47/136,589.25 = 56,530.09/x - Step 3: Cross multiply
98,972.47x = 136,589.25 × 56,530.09 - Step 4: Simplify right side
98,972.47x = 7,721,402,595.53 - Step 5: Solve for x
x = 7,721,402,595.53/98,972.47 - Step 6: Final answer
x = 78,015.66
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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.