Finding the Fourth Proportional to 77,646.24, 107,155.68 and 47,426.68
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Solution
The fourth proportional to 77,646.24, 107,155.68 and 47,426.68 is: 65,451.18
Step by Step Solution
- Step 1: Write the proportion equation
77,646.24 : 107,155.68 = 47,426.68 : x - Step 2: Convert to fraction form
77,646.24/107,155.68 = 47,426.68/x - Step 3: Cross multiply
77,646.24x = 107,155.68 × 47,426.68 - Step 4: Simplify right side
77,646.24x = 5,082,038,145.54 - Step 5: Solve for x
x = 5,082,038,145.54/77,646.24 - Step 6: Final answer
x = 65,451.18
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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.