Finding the Fourth Proportional to 76,953.68, 106,197.76 and 42,498.31
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Solution
The fourth proportional to 76,953.68, 106,197.76 and 42,498.31 is: 58,648.60
Step by Step Solution
- Step 1: Write the proportion equation
76,953.68 : 106,197.76 = 42,498.31 : x - Step 2: Convert to fraction form
76,953.68/106,197.76 = 42,498.31/x - Step 3: Cross multiply
76,953.68x = 106,197.76 × 42,498.31 - Step 4: Simplify right side
76,953.68x = 4,513,225,325.79 - Step 5: Solve for x
x = 4,513,225,325.79/76,953.68 - Step 6: Final answer
x = 58,648.60
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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.