Finding the Fourth Proportional to 39,905,043.12, 55,068,935.13 and 21,570,328.62
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Solution
The fourth proportional to 39,905,043.12, 55,068,935.13 and 21,570,328.62 is: 29,767,040.32
Step by Step Solution
- Step 1: Write the proportion equation
39,905,043.12 : 55,068,935.13 = 21,570,328.62 : x - Step 2: Convert to fraction form
39,905,043.12/55,068,935.13 = 21,570,328.62/x - Step 3: Cross multiply
39,905,043.12x = 55,068,935.13 × 21,570,328.62 - Step 4: Simplify right side
39,905,043.12x = 1,187,855,027,507,562.50 - Step 5: Solve for x
x = 1,187,855,027,507,562.50/39,905,043.12 - Step 6: Final answer
x = 29,767,040.32
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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.