Finding the Fourth Proportional to 42,228,037.80, 63,342,056.70 and 13,477,079.70
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Solution
The fourth proportional to 42,228,037.80, 63,342,056.70 and 13,477,079.70 is: 20,215,619.55
Step by Step Solution
- Step 1: Write the proportion equation
42,228,037.80 : 63,342,056.70 = 13,477,079.70 : x - Step 2: Convert to fraction form
42,228,037.80/63,342,056.70 = 13,477,079.70/x - Step 3: Cross multiply
42,228,037.80x = 63,342,056.70 × 13,477,079.70 - Step 4: Simplify right side
42,228,037.80x = 853,665,946,507,819 - Step 5: Solve for x
x = 853,665,946,507,819/42,228,037.80 - Step 6: Final answer
x = 20,215,619.55
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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.