Finding the Fourth Proportional to 74,628.98, 102,909.06 and 57,635.99
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Solution
The fourth proportional to 74,628.98, 102,909.06 and 57,635.99 is: 79,476.71
Step by Step Solution
- Step 1: Write the proportion equation
74,628.98 : 102,909.06 = 57,635.99 : x - Step 2: Convert to fraction form
74,628.98/102,909.06 = 57,635.99/x - Step 3: Cross multiply
74,628.98x = 102,909.06 × 57,635.99 - Step 4: Simplify right side
74,628.98x = 5,931,265,038.52 - Step 5: Solve for x
x = 5,931,265,038.52/74,628.98 - Step 6: Final answer
x = 79,476.71
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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.