Finding the Fourth Proportional to 38,238,468.80, 52,768,419.84 and 20,834,958.08
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Solution
The fourth proportional to 38,238,468.80, 52,768,419.84 and 20,834,958.08 is: 28,751,878.67
Step by Step Solution
- Step 1: Write the proportion equation
38,238,468.80 : 52,768,419.84 = 20,834,958.08 : x - Step 2: Convert to fraction form
38,238,468.80/52,768,419.84 = 20,834,958.08/x - Step 3: Cross multiply
38,238,468.80x = 52,768,419.84 × 20,834,958.08 - Step 4: Simplify right side
38,238,468.80x = 1,099,427,815,314,240.25 - Step 5: Solve for x
x = 1,099,427,815,314,240.25/38,238,468.80 - Step 6: Final answer
x = 28,751,878.67
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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.