Finding the Fourth Proportional to 77,904.43, 107,689.73 and 69,489.95
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Solution
The fourth proportional to 77,904.43, 107,689.73 and 69,489.95 is: 96,058.12
Step by Step Solution
- Step 1: Write the proportion equation
77,904.43 : 107,689.73 = 69,489.95 : x - Step 2: Convert to fraction form
77,904.43/107,689.73 = 69,489.95/x - Step 3: Cross multiply
77,904.43x = 107,689.73 × 69,489.95 - Step 4: Simplify right side
77,904.43x = 7,483,353,471.15 - Step 5: Solve for x
x = 7,483,353,471.15/77,904.43 - Step 6: Final answer
x = 96,058.12
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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.