Finding the Fourth Proportional to 81,657,458.10, 122,486,187.15 and 67,485,698.10
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Solution
The fourth proportional to 81,657,458.10, 122,486,187.15 and 67,485,698.10 is: 101,228,547.15
Step by Step Solution
- Step 1: Write the proportion equation
81,657,458.10 : 122,486,187.15 = 67,485,698.10 : x - Step 2: Convert to fraction form
81,657,458.10/122,486,187.15 = 67,485,698.10/x - Step 3: Cross multiply
81,657,458.10x = 122,486,187.15 × 67,485,698.10 - Step 4: Simplify right side
81,657,458.10x = 8,266,065,847,424,999 - Step 5: Solve for x
x = 8,266,065,847,424,999/81,657,458.10 - Step 6: Final answer
x = 101,228,547.15
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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.