Finding the Fourth Proportional to 45,781,490.70, 68,672,236.05 and 42,273,980.10
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Solution
The fourth proportional to 45,781,490.70, 68,672,236.05 and 42,273,980.10 is: 63,410,970.15
Step by Step Solution
- Step 1: Write the proportion equation
45,781,490.70 : 68,672,236.05 = 42,273,980.10 : x - Step 2: Convert to fraction form
45,781,490.70/68,672,236.05 = 42,273,980.10/x - Step 3: Cross multiply
45,781,490.70x = 68,672,236.05 × 42,273,980.10 - Step 4: Simplify right side
45,781,490.70x = 2,903,048,740,200,202.50 - Step 5: Solve for x
x = 2,903,048,740,200,202.50/45,781,490.70 - Step 6: Final answer
x = 63,410,970.15
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Double scale
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Similar ratio
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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.