Finding the Fourth Proportional to 76,482.60, 105,503.20 and 48,139.08
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Solution
The fourth proportional to 76,482.60, 105,503.20 and 48,139.08 is: 66,405.00
Step by Step Solution
- Step 1: Write the proportion equation
76,482.60 : 105,503.20 = 48,139.08 : x - Step 2: Convert to fraction form
76,482.60/105,503.20 = 48,139.08/x - Step 3: Cross multiply
76,482.60x = 105,503.20 × 48,139.08 - Step 4: Simplify right side
76,482.60x = 5,078,826,985.06 - Step 5: Solve for x
x = 5,078,826,985.06/76,482.60 - Step 6: Final answer
x = 66,405.00
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.