Finding the Fourth Proportional to 87,690,779.70, 122,968,645.50 and 87,690,779.70
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Solution
The fourth proportional to 87,690,779.70, 122,968,645.50 and 87,690,779.70 is: 122,968,645.50
Step by Step Solution
- Step 1: Write the proportion equation
87,690,779.70 : 122,968,645.50 = 87,690,779.70 : x - Step 2: Convert to fraction form
87,690,779.70/122,968,645.50 = 87,690,779.70/x - Step 3: Cross multiply
87,690,779.70x = 122,968,645.50 × 87,690,779.70 - Step 4: Simplify right side
87,690,779.70x = 10,783,216,402,547,896 - Step 5: Solve for x
x = 10,783,216,402,547,896/87,690,779.70 - Step 6: Final answer
x = 122,968,645.50
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.