Finding the Fourth Proportional to 78,312,615.74, 108,081,373.92 and 47,373,006.44
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Solution
The fourth proportional to 78,312,615.74, 108,081,373.92 and 47,373,006.44 is: 65,380,776.45
Step by Step Solution
- Step 1: Write the proportion equation
78,312,615.74 : 108,081,373.92 = 47,373,006.44 : x - Step 2: Convert to fraction form
78,312,615.74/108,081,373.92 = 47,373,006.44/x - Step 3: Cross multiply
78,312,615.74x = 108,081,373.92 × 47,373,006.44 - Step 4: Simplify right side
78,312,615.74x = 5,120,139,622,756,208 - Step 5: Solve for x
x = 5,120,139,622,756,208/78,312,615.74 - Step 6: Final answer
x = 65,380,776.45
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.