Finding the Fourth Proportional to 21,578,421.60, 32,363,485.20 and 6,432,847.20
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Solution
The fourth proportional to 21,578,421.60, 32,363,485.20 and 6,432,847.20 is: 9,648,034.46
Step by Step Solution
- Step 1: Write the proportion equation
21,578,421.60 : 32,363,485.20 = 6,432,847.20 : x - Step 2: Convert to fraction form
21,578,421.60/32,363,485.20 = 6,432,847.20/x - Step 3: Cross multiply
21,578,421.60x = 32,363,485.20 × 6,432,847.20 - Step 4: Simplify right side
21,578,421.60x = 208,189,355,151,061.44 - Step 5: Solve for x
x = 208,189,355,151,061.44/21,578,421.60 - Step 6: Final answer
x = 9,648,034.46
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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.