Finding the Fourth Proportional to 39,905,033.36, 55,068,921.68 and 21,570,318.86
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Solution
The fourth proportional to 39,905,033.36, 55,068,921.68 and 21,570,318.86 is: 29,767,026.86
Step by Step Solution
- Step 1: Write the proportion equation
39,905,033.36 : 55,068,921.68 = 21,570,318.86 : x - Step 2: Convert to fraction form
39,905,033.36/55,068,921.68 = 21,570,318.86/x - Step 3: Cross multiply
39,905,033.36x = 55,068,921.68 × 21,570,318.86 - Step 4: Simplify right side
39,905,033.36x = 1,187,854,199,530,770.75 - Step 5: Solve for x
x = 1,187,854,199,530,770.75/39,905,033.36 - Step 6: Final answer
x = 29,767,026.86
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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.