Finding the Fourth Proportional to 30,753,292.68, 42,432,505.14 and 18,360,979.08
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Solution
The fourth proportional to 30,753,292.68, 42,432,505.14 and 18,360,979.08 is: 25,333,948.70
Step by Step Solution
- Step 1: Write the proportion equation
30,753,292.68 : 42,432,505.14 = 18,360,979.08 : x - Step 2: Convert to fraction form
30,753,292.68/42,432,505.14 = 18,360,979.08/x - Step 3: Cross multiply
30,753,292.68x = 42,432,505.14 × 18,360,979.08 - Step 4: Simplify right side
30,753,292.68x = 779,102,339,187,532.38 - Step 5: Solve for x
x = 779,102,339,187,532.38/30,753,292.68 - Step 6: Final answer
x = 25,333,948.70
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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.