Finding the Fourth Proportional to 76,473.60, 105,490.80 and 48,130.08
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Solution
The fourth proportional to 76,473.60, 105,490.80 and 48,130.08 is: 66,392.59
Step by Step Solution
- Step 1: Write the proportion equation
76,473.60 : 105,490.80 = 48,130.08 : x - Step 2: Convert to fraction form
76,473.60/105,490.80 = 48,130.08/x - Step 3: Cross multiply
76,473.60x = 105,490.80 × 48,130.08 - Step 4: Simplify right side
76,473.60x = 5,077,280,643.26 - Step 5: Solve for x
x = 5,077,280,643.26/76,473.60 - Step 6: Final answer
x = 66,392.59
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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.