Finding the Fourth Proportional to 85,964.81, 128,941.12 and 22,783.53
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Solution
The fourth proportional to 85,964.81, 128,941.12 and 22,783.53 is: 34,173.68
Step by Step Solution
- Step 1: Write the proportion equation
85,964.81 : 128,941.12 = 22,783.53 : x - Step 2: Convert to fraction form
85,964.81/128,941.12 = 22,783.53/x - Step 3: Cross multiply
85,964.81x = 128,941.12 × 22,783.53 - Step 4: Simplify right side
85,964.81x = 2,937,733,534.31 - Step 5: Solve for x
x = 2,937,733,534.31/85,964.81 - Step 6: Final answer
x = 34,173.68
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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.