Finding the Fourth Proportional to 69,987,103.80, 104,980,655.70 and 65,735,575.80
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Solution
The fourth proportional to 69,987,103.80, 104,980,655.70 and 65,735,575.80 is: 98,603,363.70
Step by Step Solution
- Step 1: Write the proportion equation
69,987,103.80 : 104,980,655.70 = 65,735,575.80 : x - Step 2: Convert to fraction form
69,987,103.80/104,980,655.70 = 65,735,575.80/x - Step 3: Cross multiply
69,987,103.80x = 104,980,655.70 × 65,735,575.80 - Step 4: Simplify right side
69,987,103.80x = 6,900,963,850,301,052 - Step 5: Solve for x
x = 6,900,963,850,301,052/69,987,103.80 - Step 6: Final answer
x = 98,603,363.70
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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.