Finding the Fourth Proportional to 65,287,968.20, 97,819,977.90 and 31,135,776.20
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Solution
The fourth proportional to 65,287,968.20, 97,819,977.90 and 31,135,776.20 is: 46,650,263.80
Step by Step Solution
- Step 1: Write the proportion equation
65,287,968.20 : 97,819,977.90 = 31,135,776.20 : x - Step 2: Convert to fraction form
65,287,968.20/97,819,977.90 = 31,135,776.20/x - Step 3: Cross multiply
65,287,968.20x = 97,819,977.90 × 31,135,776.20 - Step 4: Simplify right side
65,287,968.20x = 3,045,700,939,783,346 - Step 5: Solve for x
x = 3,045,700,939,783,346/65,287,968.20 - Step 6: Final answer
x = 46,650,263.80
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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.