Finding the Fourth Proportional to 42,126,913.80, 63,193,869.90 and 13,372,237.80
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Solution
The fourth proportional to 42,126,913.80, 63,193,869.90 and 13,372,237.80 is: 20,059,467.44
Step by Step Solution
- Step 1: Write the proportion equation
42,126,913.80 : 63,193,869.90 = 13,372,237.80 : x - Step 2: Convert to fraction form
42,126,913.80/63,193,869.90 = 13,372,237.80/x - Step 3: Cross multiply
42,126,913.80x = 63,193,869.90 × 13,372,237.80 - Step 4: Simplify right side
42,126,913.80x = 845,043,455,805,062.25 - Step 5: Solve for x
x = 845,043,455,805,062.25/42,126,913.80 - Step 6: Final answer
x = 20,059,467.44
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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.