Finding the Fourth Proportional to 38,920,936.14, 53,708,587.98 and 21,516,243.36
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Solution
The fourth proportional to 38,920,936.14, 53,708,587.98 and 21,516,243.36 is: 29,691,142.20
Step by Step Solution
- Step 1: Write the proportion equation
38,920,936.14 : 53,708,587.98 = 21,516,243.36 : x - Step 2: Convert to fraction form
38,920,936.14/53,708,587.98 = 21,516,243.36/x - Step 3: Cross multiply
38,920,936.14x = 53,708,587.98 × 21,516,243.36 - Step 4: Simplify right side
38,920,936.14x = 1,155,607,049,499,650.75 - Step 5: Solve for x
x = 1,155,607,049,499,650.75/38,920,936.14 - Step 6: Final answer
x = 29,691,142.20
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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.