Finding the Fourth Proportional to 90,438,606.70, 135,657,910.05 and 56,001,229.90
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Solution
The fourth proportional to 90,438,606.70, 135,657,910.05 and 56,001,229.90 is: 84,001,844.85
Step by Step Solution
- Step 1: Write the proportion equation
90,438,606.70 : 135,657,910.05 = 56,001,229.90 : x - Step 2: Convert to fraction form
90,438,606.70/135,657,910.05 = 56,001,229.90/x - Step 3: Cross multiply
90,438,606.70x = 135,657,910.05 × 56,001,229.90 - Step 4: Simplify right side
90,438,606.70x = 7,597,009,808,463,571 - Step 5: Solve for x
x = 7,597,009,808,463,571/90,438,606.70 - Step 6: Final answer
x = 84,001,844.85
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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.