Finding the Fourth Proportional to 57,672,078.60, 86,508,117.90 and 55,121,161.80
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Solution
The fourth proportional to 57,672,078.60, 86,508,117.90 and 55,121,161.80 is: 82,681,742.70
Step by Step Solution
- Step 1: Write the proportion equation
57,672,078.60 : 86,508,117.90 = 55,121,161.80 : x - Step 2: Convert to fraction form
57,672,078.60/86,508,117.90 = 55,121,161.80/x - Step 3: Cross multiply
57,672,078.60x = 86,508,117.90 × 55,121,161.80 - Step 4: Simplify right side
57,672,078.60x = 4,768,427,963,779,376 - Step 5: Solve for x
x = 4,768,427,963,779,376/57,672,078.60 - Step 6: Final answer
x = 82,681,742.70
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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.