Finding the Fourth Proportional to 30,645,699.48, 42,291,353.84 and 16,895,155.68
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Solution
The fourth proportional to 30,645,699.48, 42,291,353.84 and 16,895,155.68 is: 23,315,473.92
Step by Step Solution
- Step 1: Write the proportion equation
30,645,699.48 : 42,291,353.84 = 16,895,155.68 : x - Step 2: Convert to fraction form
30,645,699.48/42,291,353.84 = 16,895,155.68/x - Step 3: Cross multiply
30,645,699.48x = 42,291,353.84 × 16,895,155.68 - Step 4: Simplify right side
30,645,699.48x = 714,519,006,875,547 - Step 5: Solve for x
x = 714,519,006,875,547/30,645,699.48 - Step 6: Final answer
x = 23,315,473.92
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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.