Finding the Fourth Proportional to 77,433.99, 115,372.61 and 72,341.88
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Solution
The fourth proportional to 77,433.99, 115,372.61 and 72,341.88 is: 107,785.63
Step by Step Solution
- Step 1: Write the proportion equation
77,433.99 : 115,372.61 = 72,341.88 : x - Step 2: Convert to fraction form
77,433.99/115,372.61 = 72,341.88/x - Step 3: Cross multiply
77,433.99x = 115,372.61 × 72,341.88 - Step 4: Simplify right side
77,433.99x = 8,346,271,146.20 - Step 5: Solve for x
x = 8,346,271,146.20/77,433.99 - Step 6: Final answer
x = 107,785.63
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.