Finding the Fourth Proportional to 58,731,644.70, 81,051,967.98 and 40,185,682.20
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Solution
The fourth proportional to 58,731,644.70, 81,051,967.98 and 40,185,682.20 is: 55,457,813.99
Step by Step Solution
- Step 1: Write the proportion equation
58,731,644.70 : 81,051,967.98 = 40,185,682.20 : x - Step 2: Convert to fraction form
58,731,644.70/81,051,967.98 = 40,185,682.20/x - Step 3: Cross multiply
58,731,644.70x = 81,051,967.98 × 40,185,682.20 - Step 4: Simplify right side
58,731,644.70x = 3,257,128,626,928,856.50 - Step 5: Solve for x
x = 3,257,128,626,928,856.50/58,731,644.70 - Step 6: Final answer
x = 55,457,813.99
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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.