Finding the Fourth Proportional to 74,798.34, 103,221.95 and 40,807.53
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Solution
The fourth proportional to 74,798.34, 103,221.95 and 40,807.53 is: 56,314.52
Step by Step Solution
- Step 1: Write the proportion equation
74,798.34 : 103,221.95 = 40,807.53 : x - Step 2: Convert to fraction form
74,798.34/103,221.95 = 40,807.53/x - Step 3: Cross multiply
74,798.34x = 103,221.95 × 40,807.53 - Step 4: Simplify right side
74,798.34x = 4,212,232,617.25 - Step 5: Solve for x
x = 4,212,232,617.25/74,798.34 - Step 6: Final answer
x = 56,314.52
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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.