Finding the Fourth Proportional to 81,289.23, 121,776.03 and 59,903.09
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Solution
The fourth proportional to 81,289.23, 121,776.03 and 59,903.09 is: 89,738.34
Step by Step Solution
- Step 1: Write the proportion equation
81,289.23 : 121,776.03 = 59,903.09 : x - Step 2: Convert to fraction form
81,289.23/121,776.03 = 59,903.09/x - Step 3: Cross multiply
81,289.23x = 121,776.03 × 59,903.09 - Step 4: Simplify right side
81,289.23x = 7,294,760,484.93 - Step 5: Solve for x
x = 7,294,760,484.93/81,289.23 - Step 6: Final answer
x = 89,738.34
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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.