Finding the Fourth Proportional to 74,970.80, 112,400.64 and 45,381.63
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Solution
The fourth proportional to 74,970.80, 112,400.64 and 45,381.63 is: 68,038.82
Step by Step Solution
- Step 1: Write the proportion equation
74,970.80 : 112,400.64 = 45,381.63 : x - Step 2: Convert to fraction form
74,970.80/112,400.64 = 45,381.63/x - Step 3: Cross multiply
74,970.80x = 112,400.64 × 45,381.63 - Step 4: Simplify right side
74,970.80x = 5,100,924,256.24 - Step 5: Solve for x
x = 5,100,924,256.24/74,970.80 - Step 6: Final answer
x = 68,038.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.