Finding the Fourth Proportional to 75,742,980.94, 113,364,135.96 and 68,936,638.60
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Solution
The fourth proportional to 75,742,980.94, 113,364,135.96 and 68,936,638.60 is: 103,177,117.85
Step by Step Solution
- Step 1: Write the proportion equation
75,742,980.94 : 113,364,135.96 = 68,936,638.60 : x - Step 2: Convert to fraction form
75,742,980.94/113,364,135.96 = 68,936,638.60/x - Step 3: Cross multiply
75,742,980.94x = 113,364,135.96 × 68,936,638.60 - Step 4: Simplify right side
75,742,980.94x = 7,814,942,470,875,783 - Step 5: Solve for x
x = 7,814,942,470,875,783/75,742,980.94 - Step 6: Final answer
x = 103,177,117.85
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.