Finding the Fourth Proportional to 67,145,209.20, 100,717,813.80 and 53,708,281.20
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Solution
The fourth proportional to 67,145,209.20, 100,717,813.80 and 53,708,281.20 is: 80,562,421.80
Step by Step Solution
- Step 1: Write the proportion equation
67,145,209.20 : 100,717,813.80 = 53,708,281.20 : x - Step 2: Convert to fraction form
67,145,209.20/100,717,813.80 = 53,708,281.20/x - Step 3: Cross multiply
67,145,209.20x = 100,717,813.80 × 53,708,281.20 - Step 4: Simplify right side
67,145,209.20x = 5,409,380,665,419,641 - Step 5: Solve for x
x = 5,409,380,665,419,641/67,145,209.20 - Step 6: Final answer
x = 80,562,421.80
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1.5x scale
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.