Finding the Fourth Proportional to 87,817,407.40, 121,187,902.98 and 48,661,720.12
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Solution
The fourth proportional to 87,817,407.40, 121,187,902.98 and 48,661,720.12 is: 67,153,107.70
Step by Step Solution
- Step 1: Write the proportion equation
87,817,407.40 : 121,187,902.98 = 48,661,720.12 : x - Step 2: Convert to fraction form
87,817,407.40/121,187,902.98 = 48,661,720.12/x - Step 3: Cross multiply
87,817,407.40x = 121,187,902.98 × 48,661,720.12 - Step 4: Simplify right side
87,817,407.40x = 5,897,211,816,742,474 - Step 5: Solve for x
x = 5,897,211,816,742,474/87,817,407.40 - Step 6: Final answer
x = 67,153,107.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.