Finding the Fourth Proportional to 81,206.71, 121,808.70 and 24,280.74
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Solution
The fourth proportional to 81,206.71, 121,808.70 and 24,280.74 is: 36,420.70
Step by Step Solution
- Step 1: Write the proportion equation
81,206.71 : 121,808.70 = 24,280.74 : x - Step 2: Convert to fraction form
81,206.71/121,808.70 = 24,280.74/x - Step 3: Cross multiply
81,206.71x = 121,808.70 × 24,280.74 - Step 4: Simplify right side
81,206.71x = 2,957,605,374.44 - Step 5: Solve for x
x = 2,957,605,374.44/81,206.71 - Step 6: Final answer
x = 36,420.70
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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.