Finding the Fourth Proportional to 30,669,816.66, 42,316,798.05 and 18,745,612.26
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Solution
The fourth proportional to 30,669,816.66, 42,316,798.05 and 18,745,612.26 is: 25,864,330.95
Step by Step Solution
- Step 1: Write the proportion equation
30,669,816.66 : 42,316,798.05 = 18,745,612.26 : x - Step 2: Convert to fraction form
30,669,816.66/42,316,798.05 = 18,745,612.26/x - Step 3: Cross multiply
30,669,816.66x = 42,316,798.05 × 18,745,612.26 - Step 4: Simplify right side
30,669,816.66x = 793,254,288,330,024.12 - Step 5: Solve for x
x = 793,254,288,330,024.12/30,669,816.66 - Step 6: Final answer
x = 25,864,330.95
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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.