Finding the Fourth Proportional to 87,121,214.20, 130,723,811.70 and 61,507,070.20
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Solution
The fourth proportional to 87,121,214.20, 130,723,811.70 and 61,507,070.20 is: 92,290,250.28
Step by Step Solution
- Step 1: Write the proportion equation
87,121,214.20 : 130,723,811.70 = 61,507,070.20 : x - Step 2: Convert to fraction form
87,121,214.20/130,723,811.70 = 61,507,070.20/x - Step 3: Cross multiply
87,121,214.20x = 130,723,811.70 × 61,507,070.20 - Step 4: Simplify right side
87,121,214.20x = 8,040,438,663,043,482 - Step 5: Solve for x
x = 8,040,438,663,043,482/87,121,214.20 - Step 6: Final answer
x = 92,290,250.28
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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.