Finding the Fourth Proportional to 76,673.99, 105,809.36 and 42,681.94
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Solution
The fourth proportional to 76,673.99, 105,809.36 and 42,681.94 is: 58,900.65
Step by Step Solution
- Step 1: Write the proportion equation
76,673.99 : 105,809.36 = 42,681.94 : x - Step 2: Convert to fraction form
76,673.99/105,809.36 = 42,681.94/x - Step 3: Cross multiply
76,673.99x = 105,809.36 × 42,681.94 - Step 4: Simplify right side
76,673.99x = 4,516,148,277.03 - Step 5: Solve for x
x = 4,516,148,277.03/76,673.99 - Step 6: Final answer
x = 58,900.65
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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.