Finding the Fourth Proportional to 77,155.64, 106,486.11 and 46,935.09
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Solution
The fourth proportional to 77,155.64, 106,486.11 and 46,935.09 is: 64,777.32
Step by Step Solution
- Step 1: Write the proportion equation
77,155.64 : 106,486.11 = 46,935.09 : x - Step 2: Convert to fraction form
77,155.64/106,486.11 = 46,935.09/x - Step 3: Cross multiply
77,155.64x = 106,486.11 × 46,935.09 - Step 4: Simplify right side
77,155.64x = 4,997,935,156.60 - Step 5: Solve for x
x = 4,997,935,156.60/77,155.64 - Step 6: Final answer
x = 64,777.32
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1.5x scale
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.