Finding the Fourth Proportional to 103,324,421.78, 142,587,709.80 and 56,914,675.68
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Solution
The fourth proportional to 103,324,421.78, 142,587,709.80 and 56,914,675.68 is: 78,542,256.70
Step by Step Solution
- Step 1: Write the proportion equation
103,324,421.78 : 142,587,709.80 = 56,914,675.68 : x - Step 2: Convert to fraction form
103,324,421.78/142,587,709.80 = 56,914,675.68/x - Step 3: Cross multiply
103,324,421.78x = 142,587,709.80 × 56,914,675.68 - Step 4: Simplify right side
103,324,421.78x = 8,115,333,259,220,958 - Step 5: Solve for x
x = 8,115,333,259,220,958/103,324,421.78 - Step 6: Final answer
x = 78,542,256.70
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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.