Finding the Fourth Proportional to 42,470,349.36, 63,395,474.64 and 36,443,808.72
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Solution
The fourth proportional to 42,470,349.36, 63,395,474.64 and 36,443,808.72 is: 54,399,659.68
Step by Step Solution
- Step 1: Write the proportion equation
42,470,349.36 : 63,395,474.64 = 36,443,808.72 : x - Step 2: Convert to fraction form
42,470,349.36/63,395,474.64 = 36,443,808.72/x - Step 3: Cross multiply
42,470,349.36x = 63,395,474.64 × 36,443,808.72 - Step 4: Simplify right side
42,470,349.36x = 2,310,372,551,493,771 - Step 5: Solve for x
x = 2,310,372,551,493,771/42,470,349.36 - Step 6: Final answer
x = 54,399,659.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.