Finding the Fourth Proportional to 77,881.24, 107,511.99 and 45,611.37
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Solution
The fourth proportional to 77,881.24, 107,511.99 and 45,611.37 is: 62,964.70
Step by Step Solution
- Step 1: Write the proportion equation
77,881.24 : 107,511.99 = 45,611.37 : x - Step 2: Convert to fraction form
77,881.24/107,511.99 = 45,611.37/x - Step 3: Cross multiply
77,881.24x = 107,511.99 × 45,611.37 - Step 4: Simplify right side
77,881.24x = 4,903,768,389.71 - Step 5: Solve for x
x = 4,903,768,389.71/77,881.24 - Step 6: Final answer
x = 62,964.70
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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.