Finding the Fourth Proportional to 81,208.71, 121,811.70 and 24,282.74
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Solution
The fourth proportional to 81,208.71, 121,811.70 and 24,282.74 is: 36,423.70
Step by Step Solution
- Step 1: Write the proportion equation
81,208.71 : 121,811.70 = 24,282.74 : x - Step 2: Convert to fraction form
81,208.71/121,811.70 = 24,282.74/x - Step 3: Cross multiply
81,208.71x = 121,811.70 × 24,282.74 - Step 4: Simplify right side
81,208.71x = 2,957,921,840.06 - Step 5: Solve for x
x = 2,957,921,840.06/81,208.71 - Step 6: Final answer
x = 36,423.70
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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.