Finding the Fourth Proportional to 81,130.80, 121,674.60 and 24,970.80
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Solution
The fourth proportional to 81,130.80, 121,674.60 and 24,970.80 is: 37,449.55
Step by Step Solution
- Step 1: Write the proportion equation
81,130.80 : 121,674.60 = 24,970.80 : x - Step 2: Convert to fraction form
81,130.80/121,674.60 = 24,970.80/x - Step 3: Cross multiply
81,130.80x = 121,674.60 × 24,970.80 - Step 4: Simplify right side
81,130.80x = 3,038,312,101.68 - Step 5: Solve for x
x = 3,038,312,101.68/81,130.80 - Step 6: Final answer
x = 37,449.55
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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.