Finding the Fourth Proportional to 42,444,317.40, 63,624,485.70 and 20,861,251.80
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Solution
The fourth proportional to 42,444,317.40, 63,624,485.70 and 20,861,251.80 is: 31,271,239.55
Step by Step Solution
- Step 1: Write the proportion equation
42,444,317.40 : 63,624,485.70 = 20,861,251.80 : x - Step 2: Convert to fraction form
42,444,317.40/63,624,485.70 = 20,861,251.80/x - Step 3: Cross multiply
42,444,317.40x = 63,624,485.70 × 20,861,251.80 - Step 4: Simplify right side
42,444,317.40x = 1,327,286,416,833,199.25 - Step 5: Solve for x
x = 1,327,286,416,833,199.25/42,444,317.40 - Step 6: Final answer
x = 31,271,239.55
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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.