Finding the Fourth Proportional to 74,406.66, 102,681.95 and 40,415.48
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Solution
The fourth proportional to 74,406.66, 102,681.95 and 40,415.48 is: 55,773.77
Step by Step Solution
- Step 1: Write the proportion equation
74,406.66 : 102,681.95 = 40,415.48 : x - Step 2: Convert to fraction form
74,406.66/102,681.95 = 40,415.48/x - Step 3: Cross multiply
74,406.66x = 102,681.95 × 40,415.48 - Step 4: Simplify right side
74,406.66x = 4,149,940,296.59 - Step 5: Solve for x
x = 4,149,940,296.59/74,406.66 - Step 6: Final answer
x = 55,773.77
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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.