Finding the Fourth Proportional to 86,289,323.70, 129,433,985.55 and 40,939,691.70
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Solution
The fourth proportional to 86,289,323.70, 129,433,985.55 and 40,939,691.70 is: 61,409,537.55
Step by Step Solution
- Step 1: Write the proportion equation
86,289,323.70 : 129,433,985.55 = 40,939,691.70 : x - Step 2: Convert to fraction form
86,289,323.70/129,433,985.55 = 40,939,691.70/x - Step 3: Cross multiply
86,289,323.70x = 129,433,985.55 × 40,939,691.70 - Step 4: Simplify right side
86,289,323.70x = 5,298,987,463,919,255 - Step 5: Solve for x
x = 5,298,987,463,919,255/86,289,323.70 - Step 6: Final answer
x = 61,409,537.55
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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.