Finding the Fourth Proportional to 31,642,347.90, 43,663,800.62 and 29,328,808.08
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Solution
The fourth proportional to 31,642,347.90, 43,663,800.62 and 29,328,808.08 is: 40,471,308.65
Step by Step Solution
- Step 1: Write the proportion equation
31,642,347.90 : 43,663,800.62 = 29,328,808.08 : x - Step 2: Convert to fraction form
31,642,347.90/43,663,800.62 = 29,328,808.08/x - Step 3: Cross multiply
31,642,347.90x = 43,663,800.62 × 29,328,808.08 - Step 4: Simplify right side
31,642,347.90x = 1,280,607,228,499,451.75 - Step 5: Solve for x
x = 1,280,607,228,499,451.75/31,642,347.90 - Step 6: Final answer
x = 40,471,308.65
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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.