Finding the Fourth Proportional to 30,849,699.86, 42,571,977.11 and 16,911,084.99
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Solution
The fourth proportional to 30,849,699.86, 42,571,977.11 and 16,911,084.99 is: 23,336,963.61
Step by Step Solution
- Step 1: Write the proportion equation
30,849,699.86 : 42,571,977.11 = 16,911,084.99 : x - Step 2: Convert to fraction form
30,849,699.86/42,571,977.11 = 16,911,084.99/x - Step 3: Cross multiply
30,849,699.86x = 42,571,977.11 × 16,911,084.99 - Step 4: Simplify right side
30,849,699.86x = 719,938,323,014,989 - Step 5: Solve for x
x = 719,938,323,014,989/30,849,699.86 - Step 6: Final answer
x = 23,336,963.61
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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.