Finding the Fourth Proportional to 77,994.24, 107,588.70 and 47,774.76
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Solution
The fourth proportional to 77,994.24, 107,588.70 and 47,774.76 is: 65,902.61
Step by Step Solution
- Step 1: Write the proportion equation
77,994.24 : 107,588.70 = 47,774.76 : x - Step 2: Convert to fraction form
77,994.24/107,588.70 = 47,774.76/x - Step 3: Cross multiply
77,994.24x = 107,588.70 × 47,774.76 - Step 4: Simplify right side
77,994.24x = 5,140,024,321.21 - Step 5: Solve for x
x = 5,140,024,321.21/77,994.24 - Step 6: Final answer
x = 65,902.61
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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.