Finding the Fourth Proportional to 81,980.52, 122,981.50 and 29,395.88
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Solution
The fourth proportional to 81,980.52, 122,981.50 and 29,395.88 is: 44,097.66
Step by Step Solution
- Step 1: Write the proportion equation
81,980.52 : 122,981.50 = 29,395.88 : x - Step 2: Convert to fraction form
81,980.52/122,981.50 = 29,395.88/x - Step 3: Cross multiply
81,980.52x = 122,981.50 × 29,395.88 - Step 4: Simplify right side
81,980.52x = 3,615,149,416.22 - Step 5: Solve for x
x = 3,615,149,416.22/81,980.52 - Step 6: Final answer
x = 44,097.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.