Finding the Fourth Proportional to 71,179,643.40, 106,769,465.10 and 48,336,865.80
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Solution
The fourth proportional to 71,179,643.40, 106,769,465.10 and 48,336,865.80 is: 72,505,298.70
Step by Step Solution
- Step 1: Write the proportion equation
71,179,643.40 : 106,769,465.10 = 48,336,865.80 : x - Step 2: Convert to fraction form
71,179,643.40/106,769,465.10 = 48,336,865.80/x - Step 3: Cross multiply
71,179,643.40x = 106,769,465.10 × 48,336,865.80 - Step 4: Simplify right side
71,179,643.40x = 5,160,901,306,076,483 - Step 5: Solve for x
x = 5,160,901,306,076,483/71,179,643.40 - Step 6: Final answer
x = 72,505,298.70
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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.