Finding the Fourth Proportional to 38,859,621.20, 58,306,020.60 and 18,654,462.80
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Solution
The fourth proportional to 38,859,621.20, 58,306,020.60 and 18,654,462.80 is: 27,989,657.61
Step by Step Solution
- Step 1: Write the proportion equation
38,859,621.20 : 58,306,020.60 = 18,654,462.80 : x - Step 2: Convert to fraction form
38,859,621.20/58,306,020.60 = 18,654,462.80/x - Step 3: Cross multiply
38,859,621.20x = 58,306,020.60 × 18,654,462.80 - Step 4: Simplify right side
38,859,621.20x = 1,087,667,492,298,733.75 - Step 5: Solve for x
x = 1,087,667,492,298,733.75/38,859,621.20 - Step 6: Final answer
x = 27,989,657.61
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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.