Finding the Fourth Proportional to 80,854.90, 121,282.35 and 49,707.70
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Solution
The fourth proportional to 80,854.90, 121,282.35 and 49,707.70 is: 74,561.55
Step by Step Solution
- Step 1: Write the proportion equation
80,854.90 : 121,282.35 = 49,707.70 : x - Step 2: Convert to fraction form
80,854.90/121,282.35 = 49,707.70/x - Step 3: Cross multiply
80,854.90x = 121,282.35 × 49,707.70 - Step 4: Simplify right side
80,854.90x = 6,028,666,669.10 - Step 5: Solve for x
x = 6,028,666,669.10/80,854.90 - Step 6: Final answer
x = 74,561.55
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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.