Finding the Fourth Proportional to 81,700.17, 112,739.74 and 45,888.99
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Solution
The fourth proportional to 81,700.17, 112,739.74 and 45,888.99 is: 63,323.16
Step by Step Solution
- Step 1: Write the proportion equation
81,700.17 : 112,739.74 = 45,888.99 : x - Step 2: Convert to fraction form
81,700.17/112,739.74 = 45,888.99/x - Step 3: Cross multiply
81,700.17x = 112,739.74 × 45,888.99 - Step 4: Simplify right side
81,700.17x = 5,173,512,801.46 - Step 5: Solve for x
x = 5,173,512,801.46/81,700.17 - Step 6: Final answer
x = 63,323.16
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1.5x scale
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.